I try not to sleep at all in my stand. Even if it is not at a peak time, you never know when a good buck will show up! A few years back, I missed an easy opportunity at a good buck. The sun was warming my stand up to just the right temperature, so I settled into a shady corner, the peak time had come and gone with no activity. I woke up just in time to see a good buckhad crossed my lane and was going into the woods! Seeing him really woke me up, but too late! From then on I decided no cat naps!