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You may know that during 11:00~1:00 in night,It's the best time to sleep.
Most of the sleep research is only about monophasic sleepers who don't Nap. And the more you read about Napping the more you will find that the rules for monophasic sleep don't apply to polyphasic sleep.
One of the most important rules of sleep is that you need to have a fixed rythmus. When you start changing your rythmus you will be out of your rythmus for a while and therefore having less energy.
This is the problem of shift workers.
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I use the bed ocassionally even climb into it proper If I plan an hour of sleep.
How long to you Nap? 60 minutes seem strange.
