The Shallow Night

Most of your answers point at the nights. The pattern they describe is not exotic: a bedtime that keeps sliding, an alarm that does not move, a middle-of-the-night wake that has become normal, or a week whose wake times are spread across three hours. This is the most common answer to "why am I always tired", and it is also the most fixable — which is the good news and the reason it gets over-diagnosed, because it is the one everybody reaches for first.

The distinction that matters here is between duration and quality. If you are in bed for eight hours and still wake up wrecked, adding a ninth hour will not help, because the problem is not how long the night was. It is how broken it was, or what hours it happened at. Sleep in fragments does not add up to sleep. And a night that runs from three in the morning to eleven is a different night, biologically, from one that runs eleven to seven, even though the arithmetic is identical. Before you buy anything or try anything, work out which of the two you have: count the wakes, and look at the spread of your wake times across a normal week.

The cheapest intervention, and the one with the most evidence behind it, is a fixed wake time — the same one every day, including weekends. Not a fixed bedtime, which you cannot control, and not more hours, which you cannot summon. The wake time is the anchor everything else hangs off, and two weeks of holding it is enough to see whether the tiredness moves. If it does not move at all, that is useful information too: it means the nights were not the whole story, and the bars above will tell you which path to open next. And if you have been told you snore heavily, or you wake up gasping, take that to a doctor rather than to a sleep routine — that one is not a habit problem.