Muscle contraction is the tightening, shortening, or lengthening of muscles when you do some activity. It can happen when you hold or pick up something, or when you stretch or exercise with weights.

Dwayne "The Rock" Johnson uses eccentric exercise to build muscle, his strength coach says. It involves lengthening muscles under tension, such as when you lower a weight (called a negative rep).

This is a common strength training technique that involves manipulating the muscle lengthening portion of an exercise, usually by slowing down the movement. Share on Pinterest Getty Images/Eugenio ...

Good news for those who struggle to fit a gym workout into their day: you may be able to cut your weights routine in half and still see the same results. New research from Edith Cowan University (ECU) ...

Eccentric-only resistance training at long muscle lengths and with a long contraction duration can chronically decrease the passive stiffness of a specific muscle while simultaneously increasing its ...

Good news for those who struggle to fit a gym workout into their day: you may be able to cut your weights routine in half and still see the same results. New research from Edith Cowan University (ECU) ...

What Are Eccentric and Concentric Contractions? Eccentric contractions occur when a muscle lengthens under load, such as lowering a dumbbell during a biceps curl. Concentric contractions happen when ...

Eccentric exercise focuses on movements, or phases of a movement, that lengthen the muscles. Some examples of eccentric exercise include lowering into a squat or lowering into a press-up. In contrast, ...

THERE'S NOT A ton of cheat codes when it comes to building muscular strength and size. There's no magic pill you can take or one single exercise you can do to expedite the process. There are a few ...