푸냥이
좋은 정보네요 ㅎ 엎드려서 잠을 자진 않지만 알아두면 좋은 것 같아요 :)
I have a habit that ruins my chest.
That is sleeping on your stomach. If you sleep on your stomach, your center of gravity shifts to one side, which can cause your chest to sag and deform. It is important to sleep in the proper posture.