siobhan wrote: > This astounds me. I very naturally sleep 2.5 to 4.0 hours a night. > According to my mother, I always slept this way. I feel good on this > schedule. Approximately once every two or three weeks I'll take a long > afternoon nap of 3-4 hours. > Siobhan What do you do for light when you are awake when it is night time? I think it is unnatural to use electric lights to prolong the day. If you tried to eliminate electric or artificial lights when the sun is down and then observe your sleep pattern, you might find that you haven't been sleeping "very naturally" at all. Michael