Sprint intervals: 30s on, 2–3 min recovery
Effective sprint intervals involve 30 seconds of maximum effort followed by 2–3 minutes of complete recovery, repeated four times per session.
Snapshot · The Diary Of A CEO with Steven Bartlett
Most Replayed Moment: This Is The Best Exercise Protocol For Women!
Explore episode
May 8, 2026
Where this was said
VO2 Max: How Little It Actually Takes to Build It
At 1:44 · chapter starts 1:19
Norwegian 4x4: once a week max
The gold-standard Norwegian 4x4 VO2 max protocol — 4 minutes on, 4 minutes off — should only be performed once a week at most.
Why 58% of Female Runners Are Damaging Their Hormones
58% of female runners have a luteal phase defect — the second half of their cycle fails because of relative energy deficiency. Running every day without adequate fueling and strength training doesn't just hurt performance; it quietly sabotages hormonal health even when periods appear normal.
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High morning cortisol = cheat code
Making the first hour of your day high-cortisol and the last hour low-cortisol is described as the single most impactful daily habit for mood, focus, alertness, stress resilience, and sleep quality.
Sleep vs Ritalin attention effects equal
A Washington University in St. Louis study found that a great night's sleep produces attention-improvement effects effectively equal to Ritalin.
4–6 hours post-exercise focus boost
In the 4 to 6 hours after exercise, dopamine and norepinephrine are elevated, making you more alert and better able to focus — unless you've exercised to exhaustion.
Physiological sigh discovered 1930s
The physiological sigh — two big inhales followed by a full exhale — was discovered by physiologists in the 1930s and is the fastest way to reduce autonomic arousal.
10 deliberate exhales raise HRV significantly
Doing just 10 deliberate exhales throughout the day can significantly elevate heart rate variability by the evening, by repeatedly activating the vagal sinoatrial node pathway.
Nicotine performance dose: 3–6mg, max 2x/week
For nicotine to have a genuine cognitive-enhancing effect rather than merely rescuing withdrawal deficit, Huberman recommends using it only once or twice per week at 3–6 mg.
Vaping = higher total nicotine than smoking
Because vaping can be done anywhere and is more palatable, people consume far more nicotine via vaping than they ever did smoking, potentially making vaping more dangerous in aggregate despite being safer per puff.
BPC-157: 2 injections cleared shoulder pain
Huberman reported that two injections of approximately 100–200 micrograms of BPC-157 eliminated persistent shoulder pain that had resisted months of other interventions.
Pinealon: 2.5–3 hrs REM in 6 hrs sleep
Huberman reported that on nights he used the peptide pinealon, he achieved 2.5 to 3 hours of REM sleep inside 6 hours — an unusually high proportion normally only found in the final hours of longer sleep.
