What do you do when you can’t mountain bike?

When I can’t mountain bike, I run. When I can’t run, I go to the gym. Well now my whole world is turned upside down because I might have torn my meniscus and I can’t do any of my regular activities until I’ve tried physical therapy and returned to the doctor, which is scheduled 6 weeks away.

That’s 6 weeks without my regular exercise. What do I do??