Once every 5 days, mostly during the night.
If I don't have to go to the college on the 6th day then I extend my shaving period by one day.
Sometimes, during exams, I don't shave for 10-15 days(the growth of my facial hair isn't much however).
Most of the people from my city Jalandhar have never shaved in their life. Know why? They are sikhs....