





Examine cases where rapid, contained trials helped clarify mechanisms, such as caffeine timing for alertness or light exposure for circadian adjustment. Success correlated with reversibility, measurable outcomes, and expert oversight. Courage served questions, not ego, and remained bounded by disciplined exit plans.
Recall episodes where individuals chased striking effects, ignored confounds, or dismissed early warnings. Sleep restriction “productivity hacks,” improvised supplementation, and extreme fasting often backfired, damaging mood, relationships, and work. Overconfidence masqueraded as evidence; better designs and mentors could have prevented unnecessary harm.
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