Korva rescues the ideas worth keeping from podcasts. Each one becomes a Card.

Myths Worth Dropping

Evan Hollis@evanhollis

13 cards

From The Rich Roll PodcastThis Breathing Technique Will TRANSFORM Your Health In DAYS

Forced mouth breathing increased snoring by 1,300% within just 24 hours.

From The Rich Roll PodcastThis Breathing Technique Will TRANSFORM Your Health In DAYS

Within days of forced mouth breathing, participants developed sleep apnea and blood pressure rose 13 points into stage-one hypertension.

From The Rich Roll PodcastThis Breathing Technique Will TRANSFORM Your Health In DAYS

In hotels, about one in every 25 breaths may contain another person’s exhaled air.

From The Rich Roll PodcastThis Breathing Technique Will TRANSFORM Your Health In DAYS

Historical dental research placed chronic mouth breathing above sugar as a cause of cavities.

From Andrew HubermanYour Top Health Questions Answered

Caffeine taken within 8–10 hours of bedtime can disrupt sleep without stopping you from falling asleep.

From Andrew HubermanThe Science of Eating for Health, Fat Loss & Lean Muscle | Dr. Layne Norton

Fitness trackers overestimated exercise calories by 28% to 93% across devices in a 2018 meta-analysis.

From Andrew HubermanThe Science of Eating for Health, Fat Loss & Lean Muscle | Dr. Layne Norton

Exercise slightly increases metabolism after a workout, but not enough to materially affect body-fat loss.

From The Diary Of A CEO with Steven BartlettDoctor Tim Spector: The Shocking New Truth About Weight Loss, Calories & Diets | E209

Exercise alone has little effect on long-term weight loss, but it can help prevent regain after diet-driven loss.

From Andrew HubermanThe Science of Eating for Health, Fat Loss & Lean Muscle | Dr. Layne Norton

Daily body weight can swing 5 to 6 pounds from fluid, while weekly lows and highs can differ by 8.

From Andrew HubermanYour Top Health Questions Answered

Coffee, caffeine, and other non-water fluids are not automatically dehydrating. The literature does not support that blanket belief.

From Andrew HubermanThe Science of Eating for Health, Fat Loss & Lean Muscle | Dr. Layne Norton

Long-term behavior change often demands a new identity, with the old lifestyle actively left behind.

From Scott AlexanderThe Quest For Caffeine You Can Have At Night

CYP1A2 turns caffeine into stimulating paraxanthine for roughly five hours, then into inactive chemicals over roughly three hours.

From Andrew HubermanExercise, Nutrition, Hormones for Vitality & Longevity | Dr. Peter Attia

Never report a relative-risk change without its absolute-risk change. The percentage alone can radically distort the decision.

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