As someone who has been bodybuilding for almost two decades, the treadmill has been my go-to cardio choice. I won’t lie; some of these long, drawn-out sessions made me question the meaning of life.

But as I had more children, it took longer to get back to the strength and body I was used to, which was frustrating. After I ...

VO2 max is a measure of your body’s efficiency in delivering oxygen and nutrients to tissues, including your brain, explains ...

Most fitness enthusiasts have heard of high-intensity interval training (HIIT). But how often are you doing HIIT workouts on (or off) the bike? There’s a fine line between pushing your intensity ...

When I was given the opportunity to try out the Women’s Health Flex Challenge, it seemed like a great place to start. The challenge is a 28-day customizable workout plan, with follow-along video ...

A good rule of thumb: you should not be able to talk and work out simultaneously during a well-programmed HIIT workout. Here's an example of a basic HIIT rowing workout. Total time: 12 min.

Kickstart your metabolism and burn more calories all day with this simple morning routine. Find out how to maximize your ...

Today we're going to do a High-Intensity Interval Training workout, or HIIT, H-I-I-T ... once or twice a week to change up your regular routine on some days. Now, this workout is so intense ...

HIIT WORKOUTS DEMAND that you give your all. You might find that you have a hard time pushing to your limits on your own—so you'll get closer to achieving your goals when you have a world class ...

HIIT WORKOUTS DEMAND that you give your all. You might find that you have a hard time pushing to your limits on your own—so you'll get closer to achieving your goals when you have a world class ...

Here's the routine that got Reeves action-ready ... swing with this workout to hit a 400-yard drive. These 20-minute HIIT workouts are the most efficient ways to train when you're low on time ...