it could me serious, tendon damage could get you out for life. plus, what do you "coach" at a gym, you really shouldn't be if you've only trained for a year and don't know all the mechanics of movement.
"When the worldly morons encounter a devilish ****-and-bull fellow who babbles a demonic line, they come up with a demonic interpretation of it and use it as a compass. This is beneath contempt." - Tamo