Advanced kettlebell HIIT combines explosive strength work with high-intensity cardio for a demanding full-body workout.

Here’s your excuse not to work out today. A single session of high-intensity exercise can disturb the body’s main stress hormone, leading to less activity after the workout, a lower body temperature, ...

Plus, exactly how to get results from whatever activity you love to do.

Every so often, a new type of workout seemingly takes the fitness world by storm. The latest in this long line of buzzy fitness fads: the Norwegian 4x4 workout, a high-intensity interval training ...

These workouts also burn calories and improve fitness. One of Porcari’s studies found that the average boot-camper expended ...

This guide helps you figure out how to squeeze strength workouts between all those miles.

For your speed workout, try a fartlek run/walk: After a walking or easy running warmup, run hard for 30 seconds or as long as ...

High intensity interval training could be the secret to staying young. — -- Exercising by doing interval training, not weight lifting, could be the secret to staying young, according to a new ...

New clinical data suggests that just ten minutes of vigorous activity triggers systemic changes in your blood, potentially slowing cancer progression and repairing DNA.

Kevin Hart transformed his fitness with sprinting, HIIT, and full-body exercises like cleans and presses to keep fit in his ...

Boost your endurance and strength, all at once.

A single session of high-intensity exercise can disturb the body's main stress hormone, leading to less activity after the workout, a lower body temperature, and weight gain, a new study of mice finds ...