I have osteopenia from treatment & have had 6 Zometa infusions. Depending on my next bone density my oncologist said I might need a yearly top up. I have always been an exerciser & at 63 still do pump classes which are weights, body combat & dragon boat racing. I have also taken up reformer Pilates which is a great workout for your muscles using resistance & weights are used too. I don’t know whether this has helped as I have been on Letrozole for over 5 years but just as important is to keep muscles strong as you get older.