Podbit · The Diary Of A CEO with Steven Bartlett
In a landmark study, participants given 20g of creatine before a 90-minute Stroop test — where you must name ink colours while reading conflicting colour words — showed statistically significant improvements in both speed and accuracy. The Stroop test is one of the most cognitively fatiguing tasks used in creatine research.
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At 34:53 · chapter starts 28:40
A healthy brain self-synthesises creatine. Under stress or sleep deprivation, 20–30g acutely is needed. German study: 30g offset cognitive decline after 21-hour sleep deprivation.
The brain weighs about 2 kilograms but consumes 20% of the body's total daily energy at rest.
A rested brain makes enough creatine on its own. But sleep deprivation, time zone shifts, exam pressure, and high-stakes performance all create metabolic stress that depletes brain creatine faster than it can be synthesised. At 20–30g acutely, supplementation crosses the blood-brain barrier and partially restores cognitive performance.
A study giving 30g of creatine to volunteers sleep-deprived for 21 hours showed it increased brain creatine levels and offset cognitive decline.
AI nailed Andrew Huberman's vertigo-vs-low-blood-pressure diagnosis because that pattern has been reported millions of times. But every patient's liver is different and data on liver surgeries is scarce worldwide — making solo robot surgery dangerous. The rule is simple: data abundance means AI can help; data scarcity means keep the human in the loop.
Fei-Fei Li's father had liver surgery performed by a da Vinci robot guided by a surgeon. The result: 10 times less blood loss than a typical procedure. This isn't replacement — it's the gold standard of human-machine collaboration, where the human's judgment and the robot's precision combine.
US drug overdose deaths fell from 110,000 to roughly 70,000 — the biggest CDC-recorded single-year drop ever. Men's rates fell 27% in one year, and the steepest decline of all was among 15–24-year-olds, down 37%. The crisis narrative around young men needs to make room for signs of genuine progress.
Kessler thought his grief expertise would protect him. It didn't. When his son David died unexpectedly, he found himself on the floor — and eventually realized that acceptance alone wasn't enough. That unmet need became the sixth stage: finding meaning.
Grief isn't just death — it's any unwanted change. Kessler lectured at Coca-Cola and General Mills not because they had lots of funerals, but because change management is grief management. People who grieve well live well.
Witnessing someone's grief isn't just emotional support — it's an essential act of healing. Kessler argues grief is a severance and connection heals it. But real witnessing has two steps: seeing the pain AND affirming the person's capacity to recover.
Avoiding grief isn't free — it's exhausting. Kessler's beach ball metaphor nails it: pushing a small balloon down is easy, but holding a massive beach ball underwater takes constant, draining energy. Unattended feelings don't disappear; they just consume you.
Most people try to control their environment to avoid triggers. Kessler flips this entirely: triggers aren't problems to manage around — they're a detailed map to your pain and your healing. Every trigger points directly to what needs attention.
Running from pain doesn't leave it behind — it accelerates the chase. Whatever we run from pursues us, and whatever we face transforms us. Both Kessler and Lewis Howes testify to knowing both roads firsthand.
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