I am a female 45 turning 46 this month. I am worried about something. I have been very active since childhood in dance and for 15 years in my youth/adult years I taught dance and also aerobic dance actively as my FT profession. After that it slided to a hobby - side profession as economic considerations and migration took me away from my major market. But now, 10 years later, I have decided to return to teaching again , as I find a lot of satisfaciton and joy in both teaching and performing. I am afraid my body is sore, esp my knees and ankles and feet. I teach daily when I dont have rehersals., Is this harmful? What sort of dangers am I incurring, what risks? I want to be able to teach until I no longer can, but also want to look at things realistically . I have never smoked so no other health issues. Thanks!