You seem to be more extreme version of me in that regard :) I'll sleep for 9-10 hours and end up on a 25-26 hour rhythm. I can get myself to 24-hour rhythm wit

You seem to be more extreme version of me in that regard :) I'll sleep for 9-10 hours and end up on a 25-26 hour rhythm. I can get myself to 24-hour rhythm with melatonin, which I do, but it doesn't reduce amount of sleep I need so I'm left with a shortened day. Unfortunately, after getting used to waking up without alarm, I find getting up forcefully really painful. And I doubt it would help productivity much, because I'd be half-zombie if I do it more than 2 days in a row.