Biohacking stripped of the theater: the evidence-based advanced protocols that actually produce measurable cognitive performance and brain health improvements. Cold exposure produces a 530% norepinephrine surge. Sauna use associates with a 65% reduction in Alzheimer’s risk. Intermittent fasting elevates BDNF and activates neuronal autophagy. The complete evidence-based framework — mechanisms, dose-response, implementation hierarchy, and the morning stacking sequence that compounds them all.