胸肌会动有什么用

king， if you want to freak out your grandmother here's a full tutorial on how to learn the chest bounce the chest bounce is actually quite simple， it's not about how much chest mouse you have， but more so the mind to muscle connection so practice this motion in front of the mirror around a hundred times every day all you want to focus on is extending that tricep and squeezing that armpit at the same time at first your chest will not bounce with you， but eventually you'll be able to bounce your chest without extending your tricep or squeezing your armpit good luck king， you got this。