Well I do it three times a day as that is what I have been taught Normally in the morning, evening after coming from office and at night before sleeping
Do you bring along your tooth brush and tooth paste when go to office? I brush only twice a day, in the morning, immediately after awaken and at night before sleep. I'll wash my mouth after meal in the afternoon. I always pratice this
brushing teeth has little to do with dental health, it was meant for breath and decoration only. Also it does wear off enamel every time you brush. Stop eating sugar and flour and you will never have to brush again.
2 times brushing, 2 times mouthwash, 1 time flossing daily, and it makes a world of difference, i'm British too so that will surprise the Americans here