The overnight body is not asleep. It is at work.
Between roughly 23:00 and 05:00, the body undergoes its most concentrated period of repair. Growth hormone peaks in the first cycles of deep sleep, cellular autophagy accelerates, and connective tissue turnover draws on the amino acid pool available in circulation.
Night Structure was designed around this window — not to disrupt sleep with stimulants, but to quietly ensure the raw materials of renewal are present when the body reaches for them. What follows is the evidence for each component.