I've never noticed my night patterns much. But the 4 pm down time is right on the money. I've tried to change my eating habits, my med schedules and anything else, but I almost always have some down time between 4-6pm.

Who knew???

a 10-20 min nap does amazing things for me, but any longer and I slow down too much and then I have a stall and it can take 2 or more hours to get my act back on the road.