I shave every day. Every once in a while I will go two days. I seem to get a smoother shave if I wait a day.
I nicked my head right behind my ears pretty good a couple of weeks ago, and I just decided to take a break and let everything heal up. I went all week, yes 7 days!!!! It felt so goooodddd to shave it back off. I kept rubbing my head and going aaahhhhh.