The Perfect Summary Podcast

A leading reproductive epidemiologist explains why sperm counts in the West have halved in forty years, what everyday chemicals have to do with it, and what you can change at home.

A Nobel-winning biologist and a health psychologist explain how stress, sleep, exercise, food, relationships and surroundings shape the telomeres that set the pace of cellular aging.

Greg Lukianoff and Jonathan Haidt argue that three bad ideas and a culture of overprotection are leaving a generation of students more fragile, more anxious and more divided.

The Holistic Psychologist's guide to why willpower fails, how childhood wires our automatic patterns, and the daily mind-and-body practices that let you choose who you become.

John Piper's case for Christian Hedonism: that chasing your deepest joy in God is not selfish but the very thing that honors Him most.

A kidney specialist argues that obesity is driven by insulin, not calories, and that eating real food less often, with regular fasting, is the lasting fix.

A former New York Times reporter argues that marijuana causes psychosis and violence and that legalization has outrun the science, a case many experts dispute.

A Harvard psychologist shows how to face hard feelings, step back from them and act on your values through small, deliberate changes.

Robert Greene turns three thousand years of military thinking into 33 strategies for everyday conflict, starting with the war inside your own head.

Mel Robbins argues that high-fiving your own reflection every morning can quiet self-criticism and teach you to back yourself the way you back everyone else.

A journalist plugs his own nose for ten days to show why breathing slowly and through the nose may be one of the most overlooked foundations of health.

Richard Feynman's last book of memories moves from a childhood of questions and a doomed love story to his investigation of the Space Shuttle Challenger disaster.

An orthodontist and an evolutionary biologist argue that modern life is shrinking our jaws, crowding our teeth and narrowing our airways, and that parents can do something about it early.

Steven Pressfield names the inner enemy that keeps us from our real work, Resistance, and shows how to beat it by turning pro and showing up every day.

Greg Koukl's friendly playbook for talking about Christian convictions by asking good questions, spotting weak arguments, and leaving a 'stone in someone's shoe' instead of starting a fight.

A Nobel physicist's mischievous, curious, sometimes profound life stories, from cracking safes at Los Alamos to drumming samba in Brazil, ending with a famous warning against fooling yourself.

A Harvard-educated wanderer trains and fights his way through the world's toughest gyms to discover why people choose to fight, and what the fight teaches them.

Performance coach Todd Herman shows how a deliberately built 'secret identity' can bring your best self out in the moments that matter most.

A busy sports columnist reunites with his dying college professor for weekly Tuesday visits, and their conversations become a final class on how to live.

Jonathan Haidt argues that smartphones, social media and overprotective parenting have rewired childhood since about 2010, and lays out a collective plan to give kids back a play-based childhood.

Robert Greene argues that greatness is a path anyone can walk: find your calling, serve a long apprenticeship, learn from mentors, read people well, and let deep immersion ripen into intuition.

Salk Institute scientist Satchin Panda argues that when you eat, sleep, see light and move matters as much as what you do, and shows how to reset the body's internal clocks.

A nine-step program that treats money as hours of your life, helps you define "enough," and maps a path to financial independence.

A Viennese psychiatrist's account of surviving the Nazi camps, and the idea he carried out of them: people can bear almost anything if they have a reason to.

INSEAD professors W. Chan Kim and Renée Mauborgne argue that the smartest companies stop fighting rivals in crowded markets and create new, uncontested ones instead.

Berkeley neuroscientist Matthew Walker makes the case that sleep is the foundation of memory, mood, immunity and a long life, and shows how to get more of it.

Rhonda Byrne's blockbuster guide to the law of attraction, which teaches that your thoughts and feelings draw matching experiences into your life, and offers ask, believe, receive as the way to use it.

Robin Sharma's fable of a burned-out entrepreneur, a stuck artist and an eccentric billionaire makes the case that owning your first hour can transform your whole life.

Nobel laureate Daniel Kahneman shows how two modes of thought, a fast intuitive one and a slow deliberate one, shape our judgments and choices, and how to catch the mistakes the fast one makes.

Mel Robbins argues that two words, Let Them, free you from managing other people, and two more, Let Me, put your energy back into the only thing you control: yourself.