You don't nap every 20 minutes, you nap for 20 minutes every 4 hours (resulting in a total of 2 hours of sleep per day). But, even as someone who works for him

You don't nap every 20 minutes, you nap for 20 minutes every 4 hours (resulting in a total of 2 hours of sleep per day). But, even as someone who works for himself and thus has more control over his schedule, napping every 4 hours seems a bit impractical to me. That's why I've been looking at the everyman sleep schedule (http://everything2.com/title/Everyman+Sleep+Schedule http://everything2.com/title/Everyman+Sleep+Schedule), which entails 3 hours of sleep at night and then 3 20-minute naps during the day. Apparently the everyman schedule is much more forgiving if you move the naps forward or backward an hour so than the uberman schedule.