If you live an active lifestyle no definitely not, however if you are pretty lazy in general and dont move around much, it might be possible if you go for some sort of 90 minute main "sleep" then fill in the gaps with 20 min naps however it very much depends on your body in general, some will find it easy some won't, in general though getting a lot of sleep is good, not just to feel refreshed but it also force stops you from doing something for too long and burning yourself out in it.