It is done using a machine called a butterfly machine or pec deck but it can also be performed using dumbbells, or cables. Moreover, training your chest muscles may help to reduce injury risks by ...

"Oftentimes, chest muscle strains can come from a pushing ... internal rotation of the shoulders and an increased thoracic spinal curve called kyphosis." People who are older or recovering from ...

When a human breathes in, their chest muscles move upwards and outwards ... smaller and smaller tubes and ends up in tiny air sacs called alveoli. Oxygen passes through the walls of the alveoli ...