Exactly the same, and "wasting" the time is the same sentiment I have. It means I get ~5h of sleep normally, and most of the activities I do in that time are what Tim Urban (in TED talk, "Inside the mind of a procrastinator", which is excellent) calls "Dark Playground" - something I next morning feel at least a bit guilty for spending time on.

For the last couple of days, during some workshops, I've slept for ~9h a day, and difference in my mential acuity today vs otherwise is impossible to deny / wave away...