Repeated exercise, or wasting, can change the way key genes work.

We've all been there: obsessed with one specific workout, whether it's a so-hard-it-hurts HIIT class, a makes-your-bod-rock ...

When it comes to fitness, it’s easy to fall into a routine. Whether you’re lifting weights, running, or doing yoga, you might feel that sticking to a single workout style is the best way to see ...

You don’t need a gym membership to get in shape. From at-home workouts and free apps to creative DIY equipment, we share ...

This combination of exercises is a way to work in some basic strength-training lifts with typical calisthenics and cardio events seen in military testing. You can do the full workout below or the ...

If you’re ready to start adding structure to your on-the-bike training, a good place to start is understanding the different types of cycling workouts, and how they all fit together to make one ...

Recent groundbreaking research has uncovered a transformative approach to exercise efficiency. The investigation demonstrates that brief, intense periods of physical activity can produce substantially ...

CARDIO—AEROBIC ACTIVITIES like walking, running, swimming, and cycling—not only reduces total cholesterol, LDL, vLDL and ...

Apple Fitness Plus covers everything including classes, narrated walks and challenges.

Brian is a New York–based science and health journalist. His work has been published by The Atlantic, The Paris Review, The New York Times For Kids, CBS News, The TODAY Show, Barron's PENTA, Engadget, ...