Under Armour, Calvin Klein, Old Navy, and Old Spice are among the brands that worked with top U.S. fitness model Greg Plitt.

Our reporters have teamed up with fitness experts to design dozens of routines. Try something new — and build an exercise ...

Experts agree that exercise is vital to longevity and helps to preserve muscle mass, bone density and joint health as we age. But it’s important to approach workouts in the right way to ensure safe, ...

Tom Rauscher, 79, completes a series of four exercises every morning, including planks and V-ups. His morning workout routine focuses on core strength and balance. His tips for building a morning ...