This sounds to me like a huge disadvantage.<p>I have what I thought of a terrible sleep hygiene too but after several years of watching collegues adapting &quot;new ways to sleep&quot;, I realized it&#x27;s not that bad at all.<p>So me (and my girlfriend) usually stay up long. Midnight to 1am is normal for a weekday. 1-2am is the time when we say: we should have been in bed already but it happens more often then I thought. We get up at 7:30 on 3 of 5 days and 6:30 on the others.<p>Obviously this shouldn&#x27;t be enough sleep and it isn&#x27;t. We both get tired sometimes somewhere around 6-7pm where we sometimes take a nap (usually on the 6:30-days) of max 1h. Sometimes we break it up early.<p>On Friday we stay up as long as we can and sleep as long as we can and want on Saturday. Same goes for Sunday where we stay up to ~2am until the late NFL game is finished.<p>It works pretty good I must say. I don&#x27;t drink coffee or take any pills, energy drinks, whatever. I can sleep pretty good on the train or plane for some bonus hours and fall asleep instantly when I get into bed. I can even go to sleep early or sleep through a whole day if I&#x27;m sick and I think there is nothing better to do (but being sick is very rare for me. I was sick one day some weeks ago. Slept through it almost completely. Got up just to eat and pee).<p>I would never want to miss the flexibility even if it&#x27;s unhealthy or whatever.