Sleep is a heat-transfer problem before it is a discipline problem.
Sleep onset is gated by a measurable drop in core body temperature — not willpower, not darkness, not a bedtime routine. LongevityStack applies an engineering lens, the same one used on a factory floor, to the room, the compounds and the protocol that move that number: mechanism first, evidence graded inline, hardware verdicts before the affiliate link.
Mechanism, not advice. How the body loses heat to fall asleep and what the data shows.
1 liveOrdered steps, no product, no affiliate — derived directly from the mechanism.
1 liveWhat enters the body that affects thermoregulation. Mechanism, evidence, dosage.
0 liveHardware that controls the ambient environment. Verdict and price before the affiliate link.
1 liveN=1 experiments run in my own bedroom. Raw data included.
0 liveOne field note a month, no sponsored placements.
Raw N=1 data from my own bedroom, plus new mechanism and protocol pages as they clear review.