At 56, Jennifer Aniston stays in shape with weightlifting and bursts of cardio — and you won't beat her at a plank, her ...

Only 24.2% of American adults meet the required Physical Activity Guidelines for both aerobic and muscle-strengthening activity. These guidelines recommend that, in a week, adults need: Staying fit ...

This 25-minute full body kettlebell workout is designed for all fitness levels—beginner to advanced. No repeat exercises, no boredom—just a powerful, efficient routine to build strength, burn fat, and ...