Healthy Lifestyle

My entire life I've had bad teeth. Every time I go to the dentist, I will have atleast 2 cavities, several teeth on watch. However, I use mouthwash and floss most days, and brush my teeth every morning and night. Is it my toothpaste? My mouthwash? Am I not brushing properly? Can someone please advise me on how to improve my teeth health. I'm tired of constantly having cavities, but I dont know what else to do to improve it.

Is it okay to take magnesium and calcium tablets at the same time as both vitamin D and vitamin C? I am also taking a bunch of prescription medication for a variety of ailments. Will there be any adverse effects?

Hello, as I am getting older I am trying to stay active. Should I be trying to exercise every single day by walking for an hour or do more intense exercise, like my zumba class, 3 times a week? I am not sure what is right to do.