Muscle is a soft tissue composed of elongated cells (muscle fibres) that produce force and motion through contraction. Involuntary cardiac and smooth muscles are responsible for contraction of the ...

You don't have to be a professional football player to need strong calf muscles. When your lower-leg muscles are in shape, they help you move and feel better. The calf muscle actually refers to ...

Discover why some people build muscle faster than others and learn science-backed strategies to optimize your muscle growth and strength training results. Giselle Castro-Sloboda Fitness and ...

If your resolutions for the new year include fitness, you may be wondering how long you’ll have to work to start seeing changes in your muscle definition. Many people expect to see quick results ...

A calf strain is an injury to the muscles of the back of the lower leg. These injuries are most often caused by minor tears of muscle fibers. Usually, the bulk of the muscle tissue remains intact.

Muscle stem cells are adult stem cells, present in skeletal muscle tissue, which can self-renew and are capable of giving rise to skeletal muscle cells. These stem cells are activated in response ...

There is no right or wrong way to create a strength training routine. However, pairing certain muscle groups together can help make your workouts more efficient. A complete training program should ...

The infraspinatus muscle, a key member of the rotator cuff team, is your shoulder's secret MVP. It helps stabilize and move your shoulder. Keeping it strong can prevent injuries and keep your ...

The 30-year-old’s massive physical transformation was striking; his defined muscles were visible under his long-sleeved white t-shirt. He was also sporting black shorts and a longer hairstyle.

Bray has spinal muscular atrophy, a rare degenerative disease that's gradually robbed him of the ability to move his muscles. At age 29, he can no longer move his head, arms, hands or legs.

The causes of muscle pain can vary. Also called myalgia, aching muscles can be caused by an injury, a symptom of a disease or infection, or a side effect of a medication. Muscle pain can also feel ...