Boost your metabolism, mood and motivation with this one month HIIT and walking workout plan, diet tips and spring recipes and an easy mindfulness exercise.

A new study suggests that HIIT workouts may help preserve lean mass in older adults compared to moderate exercise—but changes ...

Experts share the best types of interval training to help you improve both as a long-distance runner and an all-around athlete.

High-intensity interval training is one of the best ways to pack a lot of exercise into a short period of time. HIIT workouts are so efficient because they alternate short bursts of very intense ...

Want to know whether walking can actually build muscle? We asked the experts. Plus, how to get the most of your walking workout.

Can walking alone keep you fit and strong? Expert compares walking vs gym workouts for weight loss, muscle strength, ...