How do you guys time this? Whether napping or sleeping it often takes me at least 30 mins to even fall asleep lol (sometimes longer). I will say though that I do get a good 9 hours sleep 95% of nights, so I haven't often felt a need to nap.
Napping is a skill that takes practice, you need to get your body accustomed to falling asleep quickly and consider giving up after 5 minutes. Probably only try it on days when you don't get 9 hours of sleep. Consider intentionally getting less sleep on a weekend day and trying to nap then. Timing a nap after eating a large meal helps me a lot, along with a caffeine let-down.
http://danieltenner.com/post/32895447025/0017-how-to-nap-htm...