Nothing keeps me up other than enjoying the night and working better then. I tend to sleep about 4am-11am and my FitBit claims I get around 6.5 hours of actual

Nothing keeps me up other than enjoying the night and working better then. I tend to sleep about 4am-11am and my FitBit claims I get around 6.5 hours of actual sleep a night. I would like more but I don't want to get to work too late.