Sleep repairs decisions you did not realize fatigue was damaging.

A great deal of the damage of tiredness happens in judgment you have no way of noticing at the time. Choices feel normal, reasoning feels sound, and the degradation is invisible from inside, which is why sleep so often makes yesterday’s certainty look strange. Rest is not just restoration, it is correction.

Before anything significant, protect the night before. And when you find yourself sure about something at the end of a long day, wait until morning to act.