In reply to Alexander_Metcalfe:
Just climb
I, and I say this as a proper punter 6b climber, never bother I climb a climb I like the look of. Sunday was a 6b which I've failed on before and then a 6a+.
My mate warms up on 4 and 5s and is a better climber than me, so maybe he's got more of an idea, I don't get much out of climbing under 5b so I don't tend to bother.
I've only ever had tennis elbow, as an injury, but not sure whether that was work or climbing related.