This dual cross-linking design lets the muscle switch stiffness on demand. In lab tests, its stiffness jumps from about 213 kilopascals — soft, like rubber — to 292 megapascals, hundreds of times ...

Every rep in training builds mindset, discipline and resilience that carry beyond the gym—fueling growth in work, ...

Aging doesn’t mean surrendering your strength. After 50, people lose muscle more quickly, largely from doing less resistance ...

Build strength and muscle at home with this fast 12-minute bodyweight routine. Safe, effective moves for adults 45 and up.

Build strength after 50 with pushups, squats, planks, and reverse lunges. Improve balance, control, and confidence at home.