Posture is an example of how a person’s habits can affect their physical body. Conditions such as text neck and rounded shoulders are some of the most common ways poor posture begins. Any activity that causes the body to look down and forward for long periods of time can contribute to slumped shoulders. These positions disrupt how the muscles in the neck, back, and shoulders normally function. It is these muscles that control the way the body maintains its posture throughout the day. Daily tasks that may contribute to rounded shoulders include: