In the kitchen. I agree with the doc. Haven't you seen all the studies, reports, etc. on sleep. Your brain/subconscience needs rest for memory retention, matabolism, and all sorts of other stuff. They say people shorten lifespan without proper sleep.
Driver's reflects aren't as quick. So many things discovered over the years. Even the multi-millionaires swear by "power naps"
Arobics may rejuivenate your blood, and heart rate, but you can't neglect the rest of yourself, without adverse affects.
Be good to yourself, take a nap, or at least read up on it.
I only wake cranky or groggy when an alarm or my own self forces me out of sleep. 1 hour seems to be my best span. Too much and I can't get to sleep that night.