As a lecturer I was thinking about getting up at 3:30am, walk to the local gym down the road, do my thing, get back, and prepare material for the upcoming day. Go to work, finish at 5:00pm, go to bed about 8:30pm-9:00pm(?) and rinse and repeat. I tend to stay up late every evening which is not good. I also don't particularly feel energised to plan the next day's activities when I get home every evening after a long day of teaching.
I think it could work...worth a try at least. It will also make me more inclined to go to the gym, and it will be very empty.