a young athlete reaches up to grab a fresh shirt from the top shelf of his locker. His arm is fully extended upward, clearly revealing the hollow area where his arm connects to his shoulder. A friend nearby notices visible sweat marks and wrinkles his nose while pointing toward that specific body area. The friend offers a stick of deodorant with a helpful smile. Other gym-goers in the background are getting dressed and preparing for their workouts. the hollow area under the arm where it joins the shoulder