This is a problem that I've had ever since I started lifting. Whenever i try to do any overhead tricep exercises like: skull crushers, seated/standing overhead dumbell extension, or even bent over dumbell extension, (basically any exercise that requires the use of my elbows to hold the the weight) I get really sharp pains in my elbows. It only happens with weight that I can do 10-12 times. I can do light weight with lots of reps with no problems but for some reason it hurts when i do heavier weight. I take Glucosamine 3 times a day and stretch for at least 15 minutes a day and neither of the two have helped. There's another guy in the gym that has that same problem. He's huge, cut, and knows what he's doing so I trust him. Anyways, he's never tried to figure out why. He just cable extensions and close grip benches. Does anyone else on these forums have that problem? If so what, if anything have you done about it. i'd like to try and fix this so I can add some more variety to my tri exercises.