Insight | Exercise snacks and daily movement beat one heroic workout

The Short Version

Across five conversations, the same pattern keeps showing up: the movement that does the most for most people is the movement that is spread through the day and easy to repeat, not the occasional all-out session. Andrew Huberman, following Dr. Andy Galpin, now gets his weekly 200 minutes of zone 2 cardio by walking briskly and moving through daily life, and adds short "exercise snacks" like jumping jacks at airport gates and max push-up sets [1]; he also highlights a seated calf movement, the soleus pushup, that a University of Houston study linked to 52% less post-meal glucose excursion [2]. Dr. Kelly Starrett argues for a "movement-rich environment," 20 to 30 minutes on the floor each evening, and being "consistent before we're heroic" [3], while Dr. Rangan Chatterjee builds health around a five-minute kitchen workout done every day [5]. Dr. Layne Norton adds the metabolic side: non-exercise activity (NEAT) is the most changeable part of daily energy use and can fall by almost 500 calories a day after weight loss [4]. None of these experts says small bouts replace structured training. Their point is that frequent small bouts are easier to keep up, and over weeks and years they add up to real gains in fitness, blood sugar control, energy expenditure and mobility [1][2][3][4][5].

Table of contents

What They Said

Andrew Huberman and Andy Galpin: zone 2 is movement, not a workout

The most striking change in Huberman's own training came from something Andy Galpin told him. Huberman admitted that his weekly Sunday jog or hike, 60 to 90 minutes and sometimes up to four hours, didn't always get him to the weekly zone 2 target [1]. Galpin's reply surprised him: he doesn't really consider zone 2 cardio exercise at all [1]. It's essential for health, it doesn't interfere with strength, hypertrophy or other training and can even improve them, and the best way to get it is to move more and walk briskly throughout the day: carrying groceries, chasing kids, walking meetings, pacing during phone calls [1].

Huberman explains why he finds this reassuring. The research-based minimum is 150 and ideally 200 minutes a week of zone 2, which is movement where you can still hold a conversation but would struggle to finish sentences if you pushed harder, often doable breathing only through the nose [1]. Hitting that in scheduled sessions is hard. As he puts it plainly, "Most people simply do not have the time and or discipline" to get 200 minutes of zone 2 plus four resistance sessions plus four separate cardio sessions [1]. Galpin's reframing solves this: zone 2 "can be spread throughout your daily activities," and "If you simply make the effort to move around a lot more during your daily activities," Huberman says, you'll reach the 200-minute weekly threshold without even counting it [1].

This changed how Huberman experiences his weekend outing. "I don't even count that long Sunday jog or Sunday hike as exercise," he says. "I just consider that movement out of doors on the weekend" [1]. He enjoys it more for it, noting that "There's something about considering something a fitness training program that shifts it from just recreation and enjoying life to training" [1]. Just as importantly, the change freed his structured time for three resistance sessions and two other cardio sessions [1].

His longer "Fitness Toolkit" episode shows where zone 2 fits in a full week. There, the Sunday session of 60 to 75 minutes (or a two-and-a-half to five-hour hike, sometimes with a 10- to 50-pound weight vest or a loaded pack) checks off about 75 of the 180 to 200 weekly minutes of zone 2 that Peter Attia and others associate with longevity and health [2]. The rest has to come from somewhere, and the later episode's answer is daily life [1].

Huberman's exercise snacks

Exercise snacks are Huberman's third and fourth tools from the Galpin series. They are brief bouts, often done without a warm-up, that maintain or build fitness, especially during busy or travel weeks [1]. He splits them into two kinds.

Cardio snacks include 25 to 100 jumping jacks (he does them at airport gates, facing the window), 20 to 40 seconds of running up and down stairs, or jogging across a parking lot to your car [1]. According to the summary, they support endurance for efforts of 12 minutes or longer [1].

Muscular-endurance snacks include wall sits or bottom-of-squat holds for 30 to 60 seconds or more, planks (he has done them during speakerphone calls), and max sets of full-range push-ups [1]. He is specific about the push-up standard: "chest all the way to the ground So it touches the ground then pushing up till your arms are completely straight," continuing "in piston-like fashion Meaning you're not pausing at the top and taking a bunch of breaths" [1]. The point isn't to follow orders but to test yourself at a random moment: "Just see whether or not at some point Any point throughout the day you can get into a pushup position to your maximum number of pushups And then just mentally note that number to yourself" [1].

He describes what snacks are for in one run of sentences: "They're designed to get you moving to get your heart rate going To maintain or enhance your fitness and other domains of fitness And this is very important to not take too much time out of your schedule" [1]. And he draws the link to zone 2 directly: like zone 2, "These exercise snacks are designed to be incorporated into your daily life" [1]. He does one snack three to five times a week and has come to crave them, "kind of like the other kind of snack" [1].

Huberman frames the whole episode around this kind of low-cost addition. The 12 tools are things you can add to an existing routine "without adding much additional time or effort" [1]. His conclusion is that picking even one or two, such as the line and exercise snacks, and actually using them is what matters, because the best tools are effective ones that also make you more likely to keep training [1].

The soleus pushup: movement while you sit

In the Fitness Toolkit episode, Huberman opens with a study he calls "very exciting and frankly very unusual" [2]. Published in iScience out of the University of Houston, it looked at what he calls "the very small movement of a very small portion of your body in fact just one percent of your Musculature" [2].

The soleus is a wide, flat, mostly slow-twitch calf muscle beneath the gastrocnemius, built to contract continuously for standing and walking, which is why you can walk all day without it getting sore [2]. Seated participants did soleus pushups: knee bent at roughly a right angle, lift the heel while pushing down through the toe, lower it, repeat [2]. The heel lift was only about 10 to 15 degrees and participants didn't contract hard [2]. The study included equal numbers of men and women and a wide range of ages and body mass indexes, and participants did the movement for as long as 270 minutes across the day, with breaks [2].

The reported results were large. Although the soleus is about 1% of total muscle mass and burns very little muscle glycogen, researchers reported 52% less post-meal glucose excursion and 60% less hyperinsulinemia, with benefits lasting as long as two hours after a meal [2]. Huberman adds two cautions: he isn't aware of a replication yet, and he frames it as a zero-cost, low-investment tool for anyone stuck sitting in meetings, classes or on planes, not a replacement for exercise [2]. By his reading of the data, even smaller doses would likely help [2].

This is the purest example in the sources of the spread through the day idea. The benefit came from a tiny, low-effort movement done repeatedly across many hours, not from one hard effort.

Kelly Starrett: movement language and movement-rich environments

Kelly Starrett, a doctor of physical therapy who coaches elite college and professional teams, comes at the question from mobility rather than metabolism [3]. He borrows two ideas from biomechanist Katy Bowman. The first is mechanotransduction: tissues like tendons need mechanical loading to stay strong, just as a captive orca's dorsal fin droops when it no longer swims and hunts [3]. The second is "movement language." Most modern people use only a few words: sit, stand, walk slowly, then exercise on a bike or elliptical that also lacks hip extension [3]. Because the body is an adaptation machine, it adapts to that narrow vocabulary, and the brain may stop treating normal ranges of motion as safe [3].

Starrett explicitly moves the conversation away from the workout itself. The real question, he says, is what's in the environment for a busy working person: "But let's take exercise out of it. The one hour discrete working on zone two cardio, working all right, my evidence-based practice. What should I be doing the rest of the time?" [3]. His first answer is "the evening sitting on the ground for 20 to 30 minutes," cross-legged, long-sitting, in a 90/90 position, and "anytime you need to fidget, fidget" [3]. The goal is exposure: "you start to accumulate exposure, which I think in my worldview is the first order of magnitude and problem solving" [3].

When Huberman describes his sit-stand setup and an under-desk footrest that reminds him to fidget, Starrett praises it and names the idea: "what my wife would call a real, a movement rich environment. How do I pepper the environment with inputs so that I'm not just in a tiny movement language?" [3]. The concept, credited to Juliet Starrett, is about peppering daily life with movement options during hours when you can't control your schedule [3]. As Starrett frames it, "What are you going to do during the day to keep the body moving, right?" [3].

He also offers compact home versions of training for busy stretches. He and Juliet did "10, 10, 10 at 10": 10 air squats, 10 kettlebell swings and 10 pull-ups at 10 p.m. for 10 minutes, and he suggests keeping a loaded bar or kettlebell at home for sets while making dinner [3]. He does tissue-durability work daily at 51, jumping rope every day and doing isometrics to protect his Achilles [3]. And getting up and down off the ground is a bonus in itself, part of why jiu-jitsu, yoga and Pilates are so valuable; in cultures where people sleep and sit on the ground, he says, fall risk in the elderly approaches zero and back and hip problems fade [3]. A PT instructor once told him "Muscles and tissues are like obedient dogs": at no age do you stop adapting or healing, though it slows [3].

Starrett and Huberman on consistency over heroics

The Starrett conversation also contains the clearest case against the heroic workout. Huberman describes being sore for nearly two weeks after joining Cameron Hanes's non-stop circuit workout, and Starrett quotes CrossFit founder Greg Glassman: "we fail the margins of our experience" [3].

Huberman shares advice from his friend Kenny Kane: 80% of workouts at 80% of what you could do that day, 10% at 90%, 5% at 95% and only 5% of the year at an all-out 100% [3]. Since adopting it, he avoids the colds and nagging issues that used to follow eight to ten weeks of going hard [3]. Starrett agrees: "let's be consistent before we're heroic." If a workout costs you three days, the adaptation was poor [3]. He also asks "what's the least amount of work I can do to have the biggest adaptation, and three hours in the gym doesn't fit into your life, and it doesn't fit into the typical person's life" [3].

His definition of mobility keeps the focus on everyday life: "Can I do what I want with my body and can I be pain-free?" [3]. And his long-term goal is the same: "I'm not interested in being 110. I'm interested in being durable enough to take the hits on way to 110" [3].

Layne Norton: NEAT, the most changeable part of energy use

Layne Norton, who holds a PhD in nutritional sciences, adds the energy-balance side [4]. Of the buckets of daily energy expenditure, he calls non-exercise activity thermogenesis, or NEAT, the most fascinating: fidgeting, gesturing and spontaneous movement [4]. Resting metabolic rate is about 50 to 70% of daily expenditure and the thermic effect of food about 5 to 10% [4], but NEAT is the most modifiable part [4].

He describes a classic 1995 study by Levine in which people were overfed in a tightly controlled metabolic ward, and one participant gained far less than predicted because he spontaneously moved more [4]. On the other side, a 10% loss of body weight has been associated with NEAT dropping by almost 500 calories a day, which Norton now believes explains most weight-loss plateaus more than metabolic adaptation in resting metabolic rate [4]. In practice, his coaches ask clients to maintain a step count, sometimes adding cardio when spontaneous movement falls, and he treats tracking steps as a helpful proxy [4].

Norton is careful with definitions, and this matters for our question. In his words, "Neat is not something you can consciously modify"; a deliberate walk is exercise [4]. So when his coaches hold a step count steady, they're using deliberate walking to make up for spontaneous movement that has fallen. That is the same practical move Huberman and Galpin make with zone 2: deliberately putting more walking into the day [1][4].

Norton is also skeptical of one argument often made for intense workouts. On high-intensity intervals, he says the post-exercise increase in metabolism is real but too small to matter; when work is equated, fat loss is similar [4]. He adds that more than 70% of people who keep weight off exercise regularly, versus under 30% of those who regain it, and that exercise appears to increase sensitivity to satiety signals and improves health markers such as insulin sensitivity and inflammation even without weight loss [4]. A 1950s study of Bengali workers found sedentary people ate more than lightly active people, while the active matched intake to output [4].

His broader coaching philosophy points the same way: weight loss rises linearly with adherence, so he advises people to "pick the form of restriction that feels the least restrictive to you" [4]. He treats diet as a sustainability problem first, and the same logic carries over to movement.

Rangan Chatterjee: the five-minute kitchen workout

Dr. Rangan Chatterjee, a British physician with more than 23 years of clinical experience, lists movement as one of four pillars, "Food, movement, sleep, and relaxation" [5], and his movement advice is the smallest dose in these sources. For over five years he has done a five-minute strength workout almost every morning: while his French press brews on a five-minute timer, with no email, Instagram or news, he does press-ups, squats and calf raises in his pajamas, sometimes with a kettlebell or dumbbell he keeps in the kitchen [5]. Mel Robbins sums up the appeal: "You don't need a fancy gym" [5].

He calls it a keystone habit that makes other healthy choices more likely, and says it answers two questions we ask ourselves every day: "Can I trust myself? Can I rely on myself?" [5]. Mel compares it to brushing your teeth: skipping once is invisible, but the effect compounds over years [5].

His patient story is the sharpest illustration in all five sources of why small beats heroic. A 48-year-old man with belly weight, low mood and low energy lit up at the idea of strength training, and the plan was 45 minutes in the gym three times a week [5]. Four weeks later he hadn't gone once [5]. Chatterjee realized the advice didn't fit the man's life, took off his jacket, and taught him press-ups, squats and calf raises on the office floor, asking for just five minutes twice a week in the kitchen [5]. Four weeks later the man was doing 10 minutes every evening while dinner cooked, and it rippled out into lunchtime walks, better cooking, earlier bedtimes and, years later, daily meditation [5]. "Small changes done consistently lead to big outcomes," Chatterjee says [5].

His challenge to listeners is concrete: "you're going to find one five minute action and you're going to do it at the same time every day. Try it for the next seven days" [5]. He says, "I literally guarantee because I've seen this 10,000 times," that "You build up self-esteem. You become someone who can do what they say they're going to do" [5]. It can be as short as one minute, and "Inspiration without action does not lead to change" [5].

He also connects inactivity to the body's stress response: "Not moving at all is a stressor on the body" [5], and because the pillars interact, starting with one tends to help the others: "They all start to feed each other" [5].

Where They Agree, and Where They Don't

The agreement

The core agreement is strong. Every source favors movement that is built into ordinary life and easy to repeat:

• Zone 2 through daily life. Galpin and Huberman say the best way to get zone 2 is to move more and walk briskly throughout the day [1].
• Snacks and micro-movements. Huberman's cardio and muscular-endurance snacks [1] and the seated soleus pushup [2] are designed to fit into gaps in the day.
• Environment over willpower. Starrett's movement-rich environment and evening floor sitting [3], Huberman's under-desk footrest [3] and Chatterjee's kettlebell kept in the kitchen [5] all make movement the default rather than an event.
• Everyday activity as a real lever. Norton identifies NEAT as the most modifiable part of daily energy expenditure and uses step counts to protect it [4].
• Consistency over intensity. Starrett's "let's be consistent before we're heroic" [3], the Kenny Kane 80% rule [3], and Chatterjee's "Small changes done consistently lead to big outcomes" [5] all make the same point about adherence.

They also agree on why this works psychologically. Huberman says the best tools are ones that make you more likely to keep training [1]; Chatterjee says small daily actions build self-trust [5]; Norton says results rise with adherence [4]; Starrett notes that athletes "do what work and they stop doing what doesn't work" [3].

The disagreements and caveats

The sources don't truly clash, but there are real tensions with the strongest version of the headline.

Snacks are an addition, not a replacement. None of the experts says daily movement should replace structured training. Huberman still does three resistance sessions and two other cardio sessions a week, plus a day of deliberate cold and heat [1], and his foundational template includes one all-out interval session reaching maximum or near-maximum heart rate at least once a week, which Galpin recommends alongside weekly zone 2 work [2]. He describes the soleus pushup as not a replacement for exercise [2]. Starrett has his adult clients sprint once a week and suggests yoga plus sprints is a powerful combination [3], and he values the gym as a place to find blind spots, saying it "makes the invisible visible" [3]. Norton quotes Mike Israetel: "you can't out science hard training" [4]. So beat one heroic workout is right in a specific sense: frequent moderate movement beats rare, exhausting efforts. It doesn't mean hard training is unnecessary. The sources' version is daily movement as the base, with regular, sensibly hard training on top.

What counts as NEAT. Norton draws a line the others don't. For him, NEAT is spontaneous: "Neat is not something you can consciously modify," and a deliberate walk is exercise [4]. Galpin and Huberman, by contrast, describe deliberate brisk walking, walking meetings and pacing during calls as a way to get zone 2 into daily life [1]. This is mostly a difference of labels. Both sides favor more walking through the day, and Norton's own coaches use deliberate steps to offset lost spontaneous movement [4]. But readers should know that, by Norton's definition, the walking meetings and step goals are exercise, not NEAT.

How much intensity matters for fat loss. Norton says the post-exercise metabolic boost from high-intensity intervals is real but too small to matter, and when work is equated fat loss is similar [4]. Huberman values high-intensity sessions for different reasons, such as improving VO2 max with the "sugar cane" workout [1]. They aren't contradicting each other: Norton is talking about fat loss, Huberman about cardiovascular capacity. For weight control, total movement matters most; for peak fitness, some intensity still matters.

How strong the evidence is. The most dramatic numbers here, the soleus pushup's 52% and 60% reductions, come from a single study that Huberman says he isn't aware has been replicated [2]. Chatterjee's evidence for the five-minute habit is clinical experience rather than trials: patient stories and his claim to have seen it "10,000 times" [5]. Norton's NEAT figures come from studies such as Levine's 1995 overfeeding work [4]. So the case for daily movement rests on a mix of controlled studies, expert physiology and clinical experience, and the sources are open about which is which.

Why It Works

The sources give several mechanisms, each for a different benefit.

Zone 2 through daily movement builds the aerobic base without costing recovery. Galpin says zone 2 doesn't interfere with, and can even improve, strength, hypertrophy and other training [1]. Huberman adds that it can also improve "other aspects of our daily life like our ability to engage socially Our ability to have a great output at work" [1]. Because it's low intensity, it can be accumulated in pieces across the day while leaving your structured sessions free for harder work [1].

Muscular-endurance snacks build blood supply. According to Huberman, muscular endurance builds more small blood vessels to deliver fuel and oxygen and clear waste, which helps other kinds of training [1]. Short, frequent holds and max push-up sets are one way to get that stimulus without a separate session [1].

Slow-twitch muscle can work all day and soak up blood sugar. The soleus is mostly slow-twitch and designed to contract continuously, which is why it doesn't fatigue during walking [2]. Keeping it working for long stretches while seated was associated with 52% less post-meal glucose excursion and 60% less hyperinsulinemia, lasting as long as two hours after a meal, even though it's only about 1% of muscle mass and burns very little glycogen [2]. The mechanism favors continuous, low-effort work over brief, hard work.

Tissues adapt to the loads they get, many times a day. Starrett's mechanotransduction argument is that tendons and other tissues need mechanical loading to stay strong [3]. The body adapts to whatever vocabulary it uses, so a narrow day of sitting, standing and slow walking narrows your usable range, and the brain may stop treating normal ranges as safe [3]. Accumulated exposure, such as 20 to 30 minutes on the floor each evening, is his first step to restoring normal ranges [3]. And tissues keep responding at any age [3].

NEAT moves daily energy expenditure more than people realize. Norton's evidence is that spontaneous movement can protect people from weight gain when overfed, as in Levine's study, and that its drop after weight loss (almost 500 calories a day after a 10% loss) explains most plateaus [4]. Maintaining a step count helps offset that drop [4]. Exercise also appears to increase sensitivity to satiety signals and improves insulin sensitivity and inflammation even without weight loss [4].

Small, repeated actions change behavior and identity. Chatterjee explains that the brain is associative, so habits tied to a place and time stick [5]. Mel Robbins notes that he uses this "to your advantage," stacking the workout onto starting the coffee maker, "something you're going to do regardless of how you feel" [5]. Norton's research on weight maintenance reaches a similar conclusion about identity: successful maintainers said they had to develop a new identity, because "you can't create a new version of yourself while dragging your old habits and behaviors behind you" [4].

Heroic efforts carry costs that erase their gains. Starrett says a workout that costs you three days was a poor adaptation [3]. Huberman's own history, colds and nagging issues after eight to ten weeks of going hard, improved once he trained mostly at 80% [3]. In his toolkit he also keeps resistance sessions to 50 to 60 minutes of hard work, because beyond about 60 minutes cortisol rises and, for him, impedes recovery [2].

Where It Applies, and Where It Doesn't

It applies most to busy people and people who've struggled to stay consistent. Chatterjee's 48-year-old patient failed at three 45-minute gym sessions a week but succeeded with five minutes in the kitchen [5]. Huberman's snacks are meant for busy or travel weeks [1], and Starrett's movement-rich environment is for hours when you can't control your schedule [3].

It applies to people who sit a lot. The soleus pushup was framed for anyone stuck sitting in meetings, classes or on planes [2]. Starrett's evening floor sitting and fidgeting target the narrow movement language of modern desk life [3].

It applies to weight maintenance. Norton's NEAT data show why keeping daily movement up matters most after weight loss, when spontaneous movement tends to fall [4].

It doesn't replace the rest of a program. For most people, Huberman's foundation still includes two to four cardio sessions and two to four resistance sessions on top of zone 2 [1]. After 40, muscle size drops about 1 percent a year without resistance training, strength and power 3 to 5 percent a year, and speed and explosiveness 8 to 10 percent a year [1]; walking and snacks alone won't offset that. Starrett also argues that hip extension, power and speed need deliberate training such as rear-foot-elevated split squats, kettlebell swings and weekly sprints, and quotes a Soviet saying Huberman brings up, "when you stop jumping, you start dying" [3].

It doesn't fit single-goal athletes the same way. Huberman notes that someone training for powerlifting or a marathon will train substantially differently from the general template [1]. Their priorities are different, though daily movement can still sit underneath.

Some evidence is preliminary. The soleus findings await replication [2], and the five-minute habit's evidence is clinical rather than experimental [5].

Safety still matters, even for small bouts. Huberman says the single most important variable for any repetitive cardio is performing the movement safely [2], and his all-out push-up and stair snacks assume you can do them safely. If you have a heart condition, joint problems, pain or other health concerns, ask a doctor or physical therapist before adding new exercise, including short high-intensity bouts. Starrett separates a true injury (clear trauma, red-flag symptoms, or pain severe enough that you can't fill your role at home or work) from an "incident," and says true injuries warrant medical care [3].

What To Do With It

1. Move your zone 2 into daily life. Aim for at least 150, ideally 200, minutes a week of conversational-pace movement, and get much of it through brisk walking, walking meetings, pacing during phone calls, carrying groceries and chasing kids rather than only scheduled sessions [1]. If you walk enough, you won't need to count the minutes [1].

2. Keep a menu of exercise snacks and use one three to five times a week. For cardio: 25 to 100 jumping jacks, 20 to 40 seconds of stair running, or jogging across a parking lot [1]. For muscular endurance: a 30- to 60-second wall sit or bottom-of-squat hold, a plank during a speakerphone call, or one max set of full-range push-ups, chest to the ground, with no rest at the top [1].

3. Track one snack number. Do a max push-up set at a random moment and note the number, trying to improve it over time [1].

4. Do soleus pushups while you sit. In meetings, classes or on flights, with the knee at roughly a right angle, lift the heel about 10 to 15 degrees while pushing through the toe, lower it and repeat without contracting hard [2]. Treat it as an extra, not a replacement for exercise [2].

5. Set up a movement-rich environment. Use a sit-stand desk or an under-desk footrest that reminds you to fidget [3], and keep a kettlebell, dumbbell or loaded bar in the kitchen for sets while coffee brews or dinner cooks [3][5].

6. Sit on the floor for 20 to 30 minutes in the evening. Cross-legged, long-sitting or in 90/90, fidgeting whenever you like, and practice getting up and down without hands or knees [3].

7. Pick one five-minute action at the same time every day for seven days. Chatterjee's version is press-ups, squats and calf raises while the coffee brews, with no phone [5]. Tie it to something you already do every day, and let it grow if it wants to, as his patient's did [5].

8. Watch your step count, especially after weight loss. Norton's coaches have clients hold a step count steady, adding cardio when spontaneous movement falls, because NEAT can drop by almost 500 calories a day after a 10% weight loss [4].

9. Train mostly at 80%. Follow Kenny Kane's split: 80% of workouts at 80% of what you could do that day, 10% at 90%, 5% at 95% and only 5% of the year at 100% [3]. If a workout costs you three days of recovery, it was too much [3].

10. Keep the structured base. Daily movement sits under, not instead of, two to four resistance sessions and two to four cardio sessions a week, including one hard interval effort [1][2]. As Starrett puts it, "let's be consistent before we're heroic" [3].

Sources

1. Science-Supported Tools to Accelerate Your Fitness Goals · Huberman Lab
2. Fitness Toolkit: Protocol & Tools to Optimize Physical Health · Huberman Lab
3. Dr. Kelly Starrett: How to Improve Your Mobility, Posture & Flexibility · Huberman Lab
4. Dr. Layne Norton: The Science of Eating for Health, Fat Loss & Lean Muscle,* · Huberman Lab
5. Change Your Body & Your Life in 1 Month: 4 Small Habits That Actually Work · The Mel Robbins Podcast