Cardio

This cardio workout you can do with a friend builds spring-loaded strength.

Not one for marathons on the elliptical machine? Maximize the burn and minimize the boredom with these innovative options.

Cardio workouts are not a one-size-fits-all proposition. Here’s how to make your program work better for you.

The Tabata Protocol isn't easy, but it can dramatically increase your aerobic and anaerobic capacity in just minutes a month.

With the help of a few plyometric training tools, you can teach your neuromuscular system to unleash impressive speed and strength –the two ingredients behind the explosive power treasured by athletes.

If your weight-loss efforts seem stalled or stymied, heart-rate-based interval training may provide just the metabolic boost you need.

Feeling the need for speed? Yearning to turn on your turbojets? Overspeed training may deliver the velocity you've been missing.

No time? No problem. You can still squeeze in a worthwhile cardio or weightlifting workout on even your busiest days.

You've got a heart-rate monitor, but do you know how to use it? With a little guidance you can tap into your monitor's full potential – and get closer to reaching your own.

Knowing your maximum heart rate is essential for effective aerobic workouts. But if you're using 220 minus your age, you may be missing the mark entirely.

Feel like your fitness regimen is stalling? Grab a heart-rate monitor for instant feedback and lasting motivation.

Eager to be leaner? Don't work harder (or wait longer) than you have to! Learn the art of heart-rate training for optimal fat loss.

Had enough of mysterious fitness plateaus, mindless exertion, confusing estimates and lackluster results? Make sense of it all with the tell-all help of a heart-rate monitor.