This is something new I recently learnt about myself. The body tends to fit to whatever conditions you force it into. Of course there is limit and it can shut i

This is something new I recently learnt about myself. The body tends to fit to whatever conditions you force it into. Of course there is limit and it can shut itself down, but I think sleeping less won't do it. I too thought I need more sleep, or 7 hours at least. Then I had couple late nights when my sleep was in 5 hours bracket and it felt weird how good I feel, how wired I am during the day. So, I suggest you at least try sleep less (6 or 5) and see how you feel daily. Do it for one week at least to make sure you give your body space to get used to it and adjust.