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).

There are a number of ab exercises you can do at the gym to strengthen the entirety of your core. By using a cable machine, suspension trainer, or barbell, you can amplify simple ab exercises. Below ...

The word "eccentric", you’ll know, is most commonly used to describe someone or something unconventional – but in the world of fitness, it means something quite different. Thankfully, eccentric ...

A strong core is about more than just six-pack bragging rights — it’s the foundation of your strength and overall well-being. But you don't need to torture yourself with endless crunches. Instead, ...

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 ...

If you tend to breeze through the "easy" part of an exercise – like lowering into a squat or letting your dumbbells drop after a curl – you might be missing a major opportunity to build strength. That ...

Squeezing in a solid workout can be a challenge for time-poor fitness enthusiasts, but lately we’re seeing exercise scientists really drill into what the most efficient workouts might look like. A ...

New research indicates a little bit of daily activity is more beneficial than longer periods of exercise spread out across the week -- and happily, it also suggests you don't have to put in a mountain ...

After each eccentric contraction, the lever arm of the isokinetic dynamometer passively returned the elbow joint to the starting position. They found that those who performed the exercise two days a ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you tend to breeze through the "easy" part of an exercise—like lowering into a squat or letting your ...