Hi, I'm just wondering if its normal to feel pain on the inside of the elbow, not the outside, after practicing serving. I try to get the "whip lash" motion by relaxing my arm so it kind of acts like a whip and in the end "snaps". But I feel alot of pain after a while and makes me wonder if I've been doing the lash motion wrong. I actually almost feel it in the bicep too. Thx.