When should you sleep? →
People tend to sleep in 90 minute cycles (yay Psychology B!) so if you wake up at the end of a said cycle, you will feel much more awake and less groggy. If you wake up in the middle of the cycle, especially in delta sleep, you’ll feel much more tired. And if you wake up during REM sleep, which is near the end of the cycle, you’ll tend to remember dreams because that is the stage in which our muscles are relaxed but our brains are working—resulting in dreams.
You should try it. It works (at least it did for me). People who sleep longer (i.e., eight hours) will actually feel more tired than those who sleep for a shorter amount of time (i.e., six hours) but are sleeping and waking by the cycle. That’s why some people claim that they feel more rested after staying up very late and only sleeping three hours (two cycles!) compared to those who slept longer but didn’t adhere to the cycles.
This links takes you to a website which I use to quickly calculate when I should sleep. Sure, I can do the simple math itself, but what’s cool about sleepyti.me is that you set when you want to wake up, and it gives you all the times (reasonable ones) that you should go to sleep in order to wake up according to the sleep stages and its cycles.
