Tips for Relieving Muscle Tightness in Hands?

Standing up, and it stretches out your hand and arm it feels great I do 30 seconds each side twice a day

Yes! Put your hand flat against the wall and straighten your arm

I don’t have a clue about MD and that kind of thing because I don’t have it, but I play piano, and playing piano seems to keep my hands really flexible and stretches them when I practice. I figure maybe if you learn piano it’ll help in the long run? idk. just a friendly suggestion from someone who knows absolutely nothing about what you’re talking about. so take it with a handful of salt.