Bat Cave

I incline toward the early hours, and at times I require naps later in the day. Since daylight sometimes fools my body into thinking I don't need sleep when I actually do need it, I have devised what I call the bat cave. I hang thermal blackout curtains or a dark blue blanket over the bedroom window and crawl into bed for a 90 minute nap. What I have discovered works even better than the bat cave is to take a 3-4 mile walk which invigorates me and makes me sleepy when I need to be.