I have often wondered the correct thing to do as regards this issue.
Ordinarily I was brought up in a home where my mother made it compulsory for us to brush before eating in the morning and of course before going to bed.
Going forwards during my undergraduate days, I was again indoctrinated with the idea that brushing after breakfast keeps one mouth cleaner and free from debris throughout the day.
Recently, my girlfriend sees this as a dirty behaviour and has frowned at it severally. Please whats the way forward on this issue?