No mask

The sleep has changed shape rather than improved. Different, not better, and I cannot yet tell whether I mind.

Waking at four again. Not anxious, just awake, lying there listening to the boiler.

Repeat study came back and the apnoea is much reduced. Ten years of that mask.

Slept through. Whole night, no waking. It has been so long that I lay there in the morning trying to work out what was different.

Prep done.