As people age, muscles naturally lose mass and strength, a condition known as sarcopenia. The decline can make everyday activities harder and increases the risk of falls, disability and early death.

Your organs are constantly talking to each other in ways we’re only beginning to understand. Tapping into these communication ...

It goes without saying that learning new Haki was essential in Luffy's victory over Kaido, but one absolutely cannot deny the fact that what was truly required for Luffy to defeat Kaido was Gear 5.

Challenging the brain by exposing it to new situations, tasks and skills can improve its efficiency, much like strength ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." Achieving strong, defined arms or legs is about more than just lifting weights. A ton goes into growing ...

Bigger muscles have long been associated with strength, confidence and vitality. Visually, they create a powerful silhouette that signals athleticism and capability, which is one reason muscle ...

Researchers of Southwest University in Chongqing, China, have successfully used CRISPR/Cas9 gene-editing to make grass carp grow faster and develop more muscle by switching off a natural “brake” gene, ...

You won’t find dumbbells or weight machines in the gym Sean Keogh runs. At Calisthenics Club Houston, it’s all about training with body weight. “That’s all we do,” Keogh says — but that’s enough to ...

A gene known as ACTN3 (α-actinin-3) has earned the nickname “the gene for speed,” and it may have an influence on how androgens work through the androgen receptor to maintain muscle mass. Research has ...

This story is from Manual, GQ’s flagship newsletter offering useful advice on style, health, and more, four days a week. Sign up here to get it in your inbox. Whether you’ve been lifting for years or ...

You won’t find dumbbells or weight machines in the gym Sean Keogh runs. At Calisthenics Club Houston, it’s all about training with body weight. “That’s all we do,” Keogh said — but that’s enough to ...