I have been having trouble lately with my biceps get pulled or strained. When i extend my arm as if i were doing a dumbell kick back it feels like it is going to snap. then if i put my arm straight then take it and move it like back towards my back i can feel it like almost want to rip or something. It almost has to be a problem with not stretching it. Does anybody know any good stretches for the biceps area? or could there be another possible problem with it besides it needs to be stretch?