TweetBest advice in the world about arm wrestling is DO NOT ARM WRESTLE. It's an unnatural movement and will always end up in damage of some sort it seems. Seen too many guys get hurt and I just walk away from the challenge these days. And btw it's most likely not muscle damage but a strain. Take naproxen, 500 mg every 4 hours, to keep inflammation to a minimum and give it a couple of weeks. Do not take naproxen on empty stomach and do not lay down within 15 minutes of taking.