I been lifting heavy 4-6 reps for the past 6 moths and my left bicep has become extremely sore. Its progressed from a slight twinge to a deep ache. I have tried to work around the pain but now it even hurts to flex it. It hurts the worst when hoisting DBells up to do shoulder presses or Inclines (I was using 100 & 120's respectively (I feel a stabbing pain along the biceps and directly below in the bend). As far as curls, forgetaboutit, I can still do 70 on DBells but man the pain. My question: should I just take a few weeks off completely?; or just do exercises that dont hurt the biceps including machines and raise the reps to lighten the stress to my joints while not training bis directly at all. Any advice would be greatly appreciated. This really sucks because lifting weights is my outlet for stress.