round 2 p90x

Crackling sound in shoulder?

I have a crackling/bubble wrap sound when i rotate my shoulder but there is absolutely no pain at all. I can usually only hear it when i put my ear to my shoulder while rotating it.

Soooo my question is what is that from? (ive been doing round 2 of p90x btw)

It’s tiny air bubbles in the joint. My doctor told me not to worry about them.

P90X Round 2 (Wk 3)