Here's a very simple algorithm to find your optimal napping time. 1. Buy a device from myzeo.com 2. Go to sleep at night, and review the times that you entere

Here's a very simple algorithm to find your optimal napping time. 1. Buy a device from myzeo.com 2. Go to sleep at night, and review the times that you entered deep sleep 3. Take a nap during the day wearing the zeo, then figure out the time you enter deep sleep. That might be N minutes since you turned the device on. 4. Then, nap for a little less than N minutes. If you determine that you start going into deep sleep at 30 minutes in #3, then you should set your alarm for 26-28 minutes. You'll feel refreshed.