I haven’t mastered it by any means, but what I’ve found helps me feel less groggy in the mornings is arranging my sleep and wake times around my sleep cycle. Check out https://sleepyti.me. Source: 11 months ago

Use sleepyti.me to calculate when you should go to sleep so you can wake up between sleep cycles, you will feel much more rested. Source: about 1 year ago

On top of others' suggestions, try this: http://sleepyti.me/. Source: over 1 year ago

Napping in blocks actually isn't a bad sleep pattern if it works for you. I sleep in 2 3-hour blocks and sometimes an additional 2-hour nap, I can't sleep for more than 6 hours at a time, and usually not really more than 4. I was always exhausted. I use the sleepyti.me site to set my sleep cycles and wake up feeling refreshed. I too have about the same schedule (late night) I find sleep pretty interesting and... Source: over 1 year ago

Sleepytime Don’t know If this has been posted here before. But if you have issues waking up and still feeling tired, use this website. You can use it and put in what time you have to wake up or what time you have to go to sleep and it’ll give you all the times you can fall asleep in order to wake up well rested. It’s all done according to REM sleep patterns. I should use it more times than I do, but I usually... Source: over 1 year ago

Or maybe it'd be like using one of those online beat generators, but instead of dragging over from a fully opened menu you have to unlock them. https://splice.com/sounds/beatmaker or http://sampulator.com/. Source: almost 3 years ago