Doing hundreds of curls are not what you are supposed to be doing if gaining lots of muscle mass is your goal. (fitnessandpower.com)
It's clear that the sprinter is ripped with lots of muscle mass, while the runner looks thin and carries little to no muscle mass. (justinkavanaghfitness.com)
Clark, 33, played so lifelessly in Games 3 and 4 that he seemed to be aging more quickly than a portrait in the attic; Samuelsson, 35, sustained what the Red Wings were calling a groin injury in the first period on Sunday and didn't return to the game; and either the 37 - year - old Chelios had suddenly lost a lot of muscle mass or he was taking an inordinate number of dives throughout the series. (si.com)