Deep Work: The Neuroscience of Distraction-Free Productivity
Deep work isn’t a willpower problem — it’s an attention-protection problem. The real science of sustained focus, why the “23 minutes” myth is wrong, and the exact protocol Peter uses.

Deep work isn’t a willpower problem — it’s an attention-protection problem. The real science of sustained focus, why the “23 minutes” myth is wrong, and the exact protocol Peter uses.

Cold water immersion at 14°C produces a 530% norepinephrine surge — the largest acute catecholamine stimulus documented for any non-pharmacological intervention — persisting for 3–4 hours. The complete neuroscience of cold exposure and cognitive performance: the norepinephrine and dopamine mechanisms, the autonomic adaptation that builds stress resilience, the 5-week cold shower protocol, and how cold exposure integrates with exercise and supplementation in the morning performance stack.