The pectoralis major muscle is a large muscle in the upper chest, fanning across the chest from the shoulder to the breastbone. The two pectoralis major muscles, commonly referred to as the ‘pecs,’ ...

A 32-year-old, active man who worked in the military presented with left shoulder pain and weakness 6 months after sustaining an injury while bench-pressing 175 kg. On physical examination, he had a ...

Having solid, well-built chest muscles is vital if you want to be strong and healthy. You may want to play sports, carry a bunch of groceries, lift your kids in the air, or just look and feel good.

Mark S., a 27-year-old male, is complaining of left shoulder weakness. Mark trains with weights regularly (3-4 times each week) and has done this for 10 years. Six months ago, while doing the bench ...