You Can Get Placebo Sleep | Smithsonian
Christina Wodtke stashed this in Science, it's not just for breakfast anymore
Stashed in: Sleep!
I do this to myself all the time, I don't pay too much attention to how much I slept, if I do, then I will feel groggy all day when I have perceived I didn't get enough. It does work!
Well then I will have to try this the next time it happens to me.