Hi, soccer1477, you said, "I still have the twitching in my legs, mostly the right leg, after a Physical therapy session in which the therapist had me do squats with a ball between my knees my hamstring started hurting, which caused my right calf to start hurting and basically gave out on me, "

I'm not familiar with the conditions you mentioned, but I've found that I really can't get away with pushing myself in the way you were describing with the pt session. When I was 15, yes; now, no.