The pectoral muscle is often tight and shortened on individuals, creating a forward tipping of the shoulder blades and a rounded appearance at the chest. To stretch this muscle, go to a level heighted door or pole.
Shoulder/Elbow position
Raise your arm, bending the elbow so that it is even with your shoulder, creating a 90 degree angle. Your arm (from the elbow to your fingers), should be touching the door, parallel with it. If there is difficulty with this position, then try it with your elbow below shoulder height.
Head Position
Make sure to keep head aligned with the center of your chest in order to avoid neck stresses.
Action
Then, apply a slight forward pressure with your body, rotated awayfrom the arm. You should to look for a broad chest stretch. A common mistake is a feeling of a focused shoulder stretch.
How Long?
Perform for 30 seconds each on both arms for 2-3 sessions/day.