I used to be a ballet school demonstrator, so I just do a classic barre routine. And I watch Baryshnikov videos for inspiration--you stand taller just watching him be extraordinary beyond words. Know what's great? Get ballet barre music online to do your routine to--piano with perfect rhythm. Several pianists who've composed their own music. It makes you perfect your form to do it with a real ballet studio piano! (Like watching Baryshnikov)
Ballet is amazing for strength and flexibility and balance.
30 megaherz is the setting that strengthens bones. Even once or twice a week should help. I do planks on my whole body vibration machine to strengthen my arms. We don't want to break a wrist!