Happens to me from time to time. Usually I get up and do stuff. One of two things happens: I find I don't get tired and so I just get a really early start to my

Happens to me from time to time. Usually I get up and do stuff. One of two things happens: I find I don't get tired and so I just get a really early start to my day, or else I get really sleepy again an hour or so later and just go back to bed.