Safety is key. Here is a list of generally acceptable sports and athletics:
- Running (including marathons).
- Stationary bike (gym).
- Fencing.
- Moderate weightlifting.
- Rowing and swimming.
- Carefully supervised bungee-jumping.
Other beneficial activities:
- Dance.
- Yoga.
- Hiking and Trail Walking (under professional supervision).
This is only a suggested list. You probably can come up with other sports or athletics!