Yes same with my 11 month old! He’s been doing it for a couple months and I was worried at first too
Perfectly normal so don’t worry!
No it’s normal, they’re exploring with new feelings and moves. My baby still does it at 1 year, and does it when he’s dancing now lol
My son is 6 months old and has been doing this all the time lately. He doesn't seem to be in any pain or anything, just a new move... I looked it up, and it says it's a development thing.