No such thing in my world. Unlike my Wedgie kitty who seems to sleep 23 hours a day, the other hour is spent trying to get me up at 5:30a.m. by standing on my chest and Y-O-W-L-I-N-G in my face till I finally give up and rise like the dead to another day of sitting in front of my computer. Late afternoon usually brings about the big yawn and I try for the catnap, only to find I wake up 2 1/2 hours later. Apparently I don't sleep well at night, a bit of sleep apnea and (to listen to my friends and family) snoring that would scare off any monsters under the bed. Sleeping Beauty had it good!