So I did the same mistake again and challenged my friend in arm wrestle, and I won both tries, but now I'm left with a shoulder soreness/pain and I can't use it without feeling pain. It's definitly something to do with the muscle, but I can only feel it when I lift something heavy that requires the shoulders too. It's 3-4 days since it happened, and I am going to see if I can do my workout correctly today, but yesterday was a nono.
I know that it just needs time to heal and that it's stupid to arm wrestle, but I was wondering if maybe I warmed up my shoulder before workout, that I would still be able to workout, or is that bad? What's best to do right now? :S