What time of the day do you sleep best? I usually go to bed around 10pm, and get up between 6:30 and 7am. I sleep halfway decent from when I get to sleep initially (usually takes me about 20-30 minutes) until between 5:30 and 6am. I almost always wake up between those times. But I'm kinda groggy. If I go back to sleep (and have the option to sleep in), I sleep like the dead from 6am until 8am. There have been times that I've been woken up between those hours and been so out of it that I was afraid I was paralyzed. If I can sleep until 8am, I wake up feeling totally refreshed. Since I have to get up for work between those hours, though, I tend to have to force myself out of bed, and I'm just completely out of it until I'm almost ready for work. So, to answer my own question, I sleep soundest between 6 and 8am.