I have a character in a fictional world where people develop special powers, very similar to x-men. I had the character doing so much while in college that it started to get questionable how he had time fit all the activities in. I decided that a side effect of his ability (to absorb energy of other 'mutant' powers, nullifying them) is that he can use the power he absorbs from others to accelerate his natural healing in such a way that he needs less sleep at night. Thus giving him a few hours extra each day to spend on all his extra-curricular activities.
I have two questions. First, how best to make this seem plausible and realistic. Obviously were in a world where people can throw fire from their hands and read mind, so realistic is already a questionable concept, but still what can I do to best hand-wave the extra hours a night. He will still need REM sleep, and will suffer side effects if he does not get REM sleep, he only cuts back on non-REM sleep.
second, are there any implications of this that I may miss? All I want is to give him a few hours during the day to run around interacting with people by having all his homework and pesky learning to be done while others are asleep. Would there be more complex physical or psychological impacts to needing less sleep?