A reader—I’ll call her Chantal—wrote in June with questions about insomnia and sleep restriction. A few weeks ago I heard from her again:
I’m now in week 6 of sleep restriction and I have to say my sleep is getting better. I mostly sleep for 5.5 hours a night. When I started it was 3.
But the last couple of nights, I’ve woken up in the middle of the night and had trouble falling back to sleep. I have no idea why I’m waking up. Do you have any tips for staying asleep?