my hands and arms started sporadically falling asleep when driving. same happened to my legs to an extent. i kept pretty quiet about it because i'm quite the hypochondriac at times- had maybe like a fifth incident so I raised it to my physician, he ordered blood work (mostly for routine stuff bc it was coming up). everything came back fine so he assumed it was a stress related thing.
fast forward to december and i'm thinking forget it, i haven't had too much of an incident since i stopped going to the gym regularly. i go to an orthopedics office and they take x-rays of my arms. orthopedic doctor feels my elbows and tells me there's unbelievable tension in them. thinks it's from stress and improper stretching. I ordered a massage gun and have been using it routinely, haven't had an issue since.
interesting stuff. i was afraid my arms were going to lock in place and i'd get killed on the highway or something