[Closed] Sore wrists using crutches - will a powerball help?

I have a none weight bearing leg cast so am moving round on crutches.

My wrists are getting a bit sore when moving around and I was wondering if a powerball would help.

Also, any suggestions from strengthening the muscle on the side of my torse are welcome. They ached like fury after walking about 1 mile last week and I didn't even know i had muscles there.

Feel free to make up your own jokes about spending time on the www, sore wrists, crutches etc

Yes, I do have a bottle of MTFU in front of me.