Robert's symptom: "His right arm had a pretty permanent pump after working out. Became abnormal. In the end, his heart was pumping tons of blood into his arm when he was working out, but it couldn't escape due to the blood clot." Diagnosis: "Progressive deterioration and hardening of the vein walls due to wide-range shoulder motions pinching his vein over the years, forming a blood clot. His right side is significantly lower than the one on his left side. Wide-range shoulder motions like those of chest flies, wide grip bench, lateral raises, and probably rear delt raises made his clavicle and top rib actually close on top of his subclavicle vein." Medication and Surgery: "Surgery on subclavicle vein. Removed 80% of the clot. Prescribed 'EBA' for blood thinning. Possible upper rib removal." In the End: "He won't be lifting weights, permanently. They think the increased muscle in the arms is what started the problem to begin with." -- This scares the bejesus out of me because, like him, I'm a hardgainer who's managed to put on a decent amount of weight using some natural and some unnatural methods. I don't know what his height is or if this is hereditary. The only thing hereditary in my family is hair loss (ugh). I know that for, since I'm super tall, I have to watch out for collapsing lungs and other stuff. But this vein pinching shit. Crap! Has anyone ever heard of this happening before? And do you really think it could've been triggered by shoulder exercises? I feel really bad for him not being able to work out anymore. (Although, I'm sure he will be able to work out a little, just not for bulking.) The gym is my happy place, and I'd be really sad if someone told me I need to spend less time there for my own sake and health.