depends how much power you want ... lol
Mine vary between 5 and 15 minutes. After that i can go for another 18 hours or so, providing get enough calories.
Apparently an effective power nap is either 30 or 90 minutes
15-20 minutes and back on the road. Any more leaves me groggy.
20 - 25 min.
thought it was 10 minutes
For me? An hour and a half..most consider it 30 minutes.
20 minutes max
20-30 minutes.. that's usually fine..
3hours and sometimes 5hours