Just curious, what are the leisure activities you are evaluating? I think I might be able to give you some perspective on what activities you are able to do.And I think 5-8 hours would be an overstatement. I'd say I probably average about 3-4 hours a day including weekends on average, but obviously the time spent varies on what assignments you have to do (i.e. before an assignment is due or sometimes I take the weekend off of doing work to do something so I do the work earlier).