what are the chest muscles near the armpit called
The muscles located between your armpits and back are called the latissimus dorsi. This muscle runs all the way from your chest to the middle of your back, one on each side.To tighten this muscle, you can perform a number of strength training exercises that will make the muscle thicker and harder.his muscle runs all the way from your chest to the middle of your back, one on each side. To tighten this muscle, you can perform a number of strength training exercises that will make the muscle thicker and harder.