Insights

ApoB and blood pressure: the fixable numbers behind heart disease

Peter Attia calls blood pressure under-diagnosed and apoB a causal driver to treat early, Layne Norton changed his mind on LDL, and Casey Means lists the blood tests everyone should know. Cardiovascular disease is the top killer, and these are measurable and modifiable.

Exercise and immunity: moderate helps, extreme hurts

Roger Seheult's J-curve and Huberman's cold, flu and immune episodes agree that regular moderate exercise strengthens immunity while very intense bouts can temporarily weaken it. It helps active people train smart during cold and flu season.

21 min read

The red wine myth: why experts now say less alcohol is always better

Addiction doctor Sarah Wakeman, Huberman and Peter Attia agree that even moderate drinking harms the brain, sleep and cancer risk, and that the heart-healthy red wine story doesn't hold up. It replaces a comforting myth with a clear longevity message.

24 min read

Speed is a feature: why top engineers obsess over latency

FFmpeg's handwritten assembly, Cursor's KV cache and speculative edits, and Perplexity's work on indexing and latency all show teams treating milliseconds as product quality. The pattern explains why performance work, often dismissed as premature optimization, is central to software people love.

Test obsessively: asserts, fuzzing and verification from FFmpeg to Cursor

FFmpeg and VLC maintainers describe obsessive testing and reverse engineering, ThePrimeagen swears by asserts past the 5,000-line mark, and the Cursor team explores AI bug finding and the limits of formal verification. Together they offer a practical case for building correctness checks into code from the start.

Who decides what's true? Bias, censorship and moderation in AI and platforms

Mark Zuckerberg explains moving from fact-checkers to Community Notes, the DeepSeek analysts warn about hidden influence and censorship in models, Sam Altman discusses bias, and Yann LeCun says open source is the answer to it. The comparison shows the same content-control questions moving from social media into AI systems.

Who should control powerful AI? Concentration-of-power worries across the labs

Leaders from Anthropic, OpenAI, Perplexity and Meta, plus the DeepSeek analysts, all raise the risk of a few companies or governments controlling compute and AGI, but propose very different safeguards. The shared worry shows this is a mainstream industry concern, not a fringe one.

22 min read

Will AI replace programmers? What the people building AI coding tools say

The Cursor founders, Dario Amodei, Sam Altman and ThePrimeagen each describe how programming is changing as models write more code, and they disagree on what remains uniquely human. Their views matter for anyone deciding whether and how to learn to code now.

Algorithms are shrinking your mind: reclaiming attention from the feed

Mel Robbins describes how the algorithmic life cuts us off from our brilliance, Chris Williamson warns about algorithms and 'knowingness', Laurie Santos shows phones stealing presence, and Kay Tye explains why social media isn't the same as connection. Protecting attention from feeds is now a core part of any healthy mindset.

Calm is the edge: why composure beats intensity under pressure

Navy SEAL Rich Diviney says calm is the edge in chaos, Candace Parker calls calm a superpower, Khabib describes the calm of the greatest fighters, and Chris Voss and Jefferson Fisher both use a lower voice, breath and silence in hard conversations. Staying composed is a trainable skill that changes outcomes in fights, games and arguments.

Mindset and Performance

Cutting plastics: simple swaps against endocrine disruptors

Shanna Swan, Natalie Crawford, William Li and Huberman's microplastics episode identify phthalates, BPA and microplastics in food, water and packaging as hormone disruptors, and list easy swaps. Reducing exposure is cheap and protects fertility and hormone health.

Eight hours or twelve? How long your eating window should be

Satchin Panda favors a 12-hour window for most people and warns against windows that are too short, Huberman's review discusses 8-hour windows for fat loss, and Norton finds fasting no better than equal calories. It helps readers pick a sustainable window instead of chasing the strictest one.

Feed your microbiome: fermented foods, fiber and less processed food

Justin Sonnenburg's fiber versus fermented food study, Chris Thompson on fiber and the gut barrier, and Mark Hyman and Rajsree Nambudripad on gut health agree that diet quickly shapes the microbiome and inflammation. It's a practical, food-based path to better health.

Forgive or release? Two views on letting go of old hurts

Edith Eger, Chris Lee, Oprah and John Paul DeJoria present forgiveness as freeing yourself rather than excusing the other person, while Caroline Leaf prefers the idea of release over forgiveness. Both camps agree the goal is to stop carrying the hurt, and the framing that fits you may make that easier.

21 min read

Hitting the protein threshold: how much per meal and when

Gabrielle Lyon's leucine meal threshold, Layne Norton's protein distribution data and Stacy Sims's protein-first breakfast agree that most adults, especially older ones, benefit from more protein spread across meals. It is one of the simplest changes to protect muscle with age.

Exercise Strength Training

30 min read

Is willpower a limited resource? The ego depletion debate

Huberman reviews the ego depletion controversy and finds that beliefs about willpower change the outcome, Kelly McGonigal calls willpower a biological response rather than a moral trait, and Chris Voss factors ego depletion into timing hard conversations. What you believe about willpower may matter as much as how much you have.

Peptides: promising, poorly tested and often gray-market

Craig Koniver uses peptides clinically, while Huberman's review stresses thin human evidence, tumor questions and sourcing risks, and his growth hormone episode warns about injections. It shows why physician oversight matters in a fast-growing, loosely regulated field.

Supplements Peptides Hormones

Sleep is the longevity lever most people ignore

Attia calls sleep an overlooked pillar, Matt Walker details what short sleep costs body and brain, and both describe how alcohol and timing wreck its quality. Protecting sleep amplifies the payoff of every other longevity habit.

22 min read

Ultra-processed food or total calories? Lustig and Norton disagree

Robert Lustig argues a calorie is not a calorie and that fructose and ultra-processed food drive disease independent of energy balance, while Layne Norton holds that energy balance explains weight and that sugar, sweeteners and seed oils are overblown villains. Seeing both helps readers weigh food quality against quantity.

27 min read

Which blood tests to get, and when to start

Casey Means, Sara Gottfried, Kyle Gillett and Peter Attia each lay out biomarkers worth tracking by age and sex, from glucose and insulin to hormones and lipids. Starting a baseline early lets you catch drift years before disease.

Beating hallucination: citations, verification and world models compared

Perplexity grounds answers in academic-style citations, Cursor looks to bug finding and formal verification, and Yann LeCun argues hallucinations come from LLMs' long tail and need world models to fix. Comparing these approaches shows readers how different builders try to make AI output trustworthy.

Envy and resentment as signals, not sins

Grant Cardone says resentment signals you've gone too small, Jordan Peterson links envy and gratitude to calling and conscience, and Paul Conti explains how envy grows when drives run out of balance. Treating envy as information about what you want lets you act on it instead of being consumed by it.

Mastery is repetition: the unglamorous path of the greats

Robert Greene ties mastery to repetition, Tony Hawk describes building new tricks over decades, Bryan Callen talks pool and mastery under pressure, and Neil Adams explains how champions train. Across skateboarding, judo and writing, excellence comes from thousands of focused reps rather than talent alone.

Should women fast? Why Stacy Sims says eat before training

Stacy Sims argues that fasting and fasted training affect women's hormones differently and can backfire, while other guests promote time-restricted eating and Mary Claire Haver adapts fasting for menopause. Women get a clearer view of when fasting helps and when it harms.