Should i do gym with a hairline fracture?
No, it might take longer for your arm to heal. I would suggest walking if you want to get some excercise of lose weight. Or if you go to the gym, only use stuff like, the bikes or the treadmills or anything only leg related. And wear an arm brace anyway, you’d be surprised, you still use your arm muscles even when jogging, cycling. Basically if your arm is moving, its using the muscles. Wear an arm brace, like a sports support thing, so the muscles moving doesnt irritate or worsen your fracture.