In her book, “On Muscle: The Stuff That Moves Us and Why it Matters," journalist and author Bonnie Tsui explores the biology and beauty of muscles. (Drawing by Bonnie Tsui) For a long time, ...

Muscle stem cells, which are crucial for building new muscle, don’t work as well as we get older, but giving them an ...

When you train your muscles (either by lifting weights, running, or doing resistance work), you create tiny microtears in your muscle fibers. While this might sound detrimental, it’s actually a good ...

Modern exercise culture has spent years glorifying exhaustion. The harder a workout feels, the more effective people assume ...

Developing bigger pectoral muscles, or "pecs," is one of the most common goals for anyone focused on building upper-body strength or improving their physique. After all, a strong, well-developed chest ...

Muscle loss, or atrophy, due to inactivity is common after illness, injury, hospitalization or falls, and becomes increasingly frequent with aging. New research published in Advanced Science shows ...

When you’ve pushed through an intense workout, you might have sore muscles to go along with that surge of accomplishment. Maybe it’s those quads and hammies after leg day or triceps and biceps after ...

Building muscle after 50 is essential for feeling strong and healthy. While you’re perfecting your strength training routine and making sure to eat enough protein, you might wonder: How long does it ...

Workout regimens often flame out as quickly as it takes them to start trending. But others can stand the test of time. Exercises like tai chi, running, swimming, hiking and yoga have been around for ...