Here is a link to a nice badminton match (a bit old though). Notice that Kenneth Jonasson (player in white) is considered a large player.
Interesting. I doubt muscles will interfere greatly, if at all. Muscles are your friends.
I guess I’ll just experiment on myself if they really do (starting to doubt it). Maybe it has something to do with that my friend doesn’t have the best technique in badminton.
Sounds good.