There's a school of thought that says going to bed early and waking up early to do your things has several advantages (and disadvantages ofc). There are people that wake up 2 hours early to do their homework, write their reports, play games, whatever. Doing so improves information retention, and performance as you're doing any work fully refreshed having slept on the problem(s) the night before.

It also allows for the strategy I mentioned before. Go to bed at 8, wake up at 4 and have the house to yourself without being groggy (which is almost always caused by being interrupted prior to a REM stage of sleep cycle instead of right afterwards). The issue is changing your sleep schedule. Melatonin could help with this.