Check out Kristan Dietz's author page.

These five rowing machine cardio workouts will help you work your way to a leaner, fitter body fast.

Don't skip your cool-down; make it your own with these tips.

Experts share some of the key do’s and don’ts of scheduling your heart-pumping workouts.

Looking to boost your running longevity? This mobility routine for runners checks all the boxes you need to keep running pain-free.

Put the power back in power walking with these tips for increasing the intensity.

Here are the running warm-up essentials you can use to build your own routine before your next run. 

Warmer weather draws runners back outside, but how do you get back into more significant mileage without injuring yourself?

Check out Meredith Butulis's author page.

This group of workouts will get your heart pumping.

Why this marathon runner never skips strength training days.

Are you ready for more Tabata?

New year, new speeds.

HIIT your body from head to toe in 40 minutes with this minimal-equipment, maximum-results workout.

There's no getting around it: Hill training is rough. But if you do it correctly, it's worth it.

There are 4 physiological reasons why consistent runs have an oversized effect on long-term growth. On a tough day, even 10 or 20 minutes can be plenty to spur progress.

Here's how to make the most out of your stairs.

Low impact, high-intensity and fresh air — what more could you want?

You don’t have to pick one or the other — you can combine cardio and strength.

Check out Annie Cooper, CPT's author page.

Take advantage of the warm end-of-summer weather with this pool-based routine.

Add variety to your training with these dynamic, no-equipment cardio moves.

These tips can help you make the most of your HIIT workout.

This interval workout has you racing against the clock, improving endurance, building muscle and boosting your metabolism.

Need to shake up your workout routine? Take your training outdoors this summer by trying a fun new fat-burning activity.

Use plyometric training to improve performance and enhance fat burning.

Boost your workouts by becoming more mindful about your breathing technique.

This low-impact rowing workout will help you engage nearly twice as many muscles as running or biking.

Think treadmills are reserved for long, uninspiring runs? Think again!

Veteran “skipper” Kim Corbin shares the story of Ro Gammon, a seasoned runner who plans to skip an entire half marathon in honor of her 70th birthday.

Build stronger, shapelier legs with this high-intensity hill workout.

Jump to increase your fat-burning potential.

Beyond the hype, hopping on a bike has some serious benefits.

There is no magical, universal time of the day for cardio, but there are optimal times based on your individual lifestyle.

Step up your game both figuratively and literally with this challenging stepper workout.

These four “no-gym” workouts will keep you on track to accomplish your fitness goals no matter your location.

Follow these drills and workouts and you’ll be burning up the track and burning body fat at the same time.

Get as lean as you want to be without waiting on cardio row at rush hour.

Try David Siik’s precisely calculated treadmill system to engage your mind, preserve your joints and burn a ton of fat in less than half an hour.

Spring’s here! But a cool winter tool can help you scorch calories in the outdoors.

This winter, you may find yourself looking at more indoor cardio. Try these four time-to-sweat workouts.

Oxygen’s fat-melting interval plan will get you ready to feel the heat — and see results!

If you want the best cardio workout, bypass the treadmill and step onto the StepMill.

Jump training is a great way to increase strength and stamina. Here’s why you should incorporate it into your routine.

Learn how to fine-tune your fitness routines in the weeks before a 10k race.

Take to the hills to burn mega-calories and get a ringside seat for Mother Nature’s finest.

May cover model Alicia Marie shares her two favorite playlists for getting your sweat on!

Turn a set of stairs into a fat-burning machine with this quick but effective workout.

Use high-intensity interval training to reveal awesome abs. Try these three do-anywhere routines.

Use these four cardio protocols and get leaner, stronger and faster than ever.

Good old-fashioned cardio has been snubbed lately in favor of HIIT. But here’s why adding it into your training mix is exactly what your body needs.

HIIT it hard by incorporating a boxing-based fitness workout into your current cardio routine.

Erin Stern teaches you how to do your cardio in less time with sprint drills.

Increase your heart rate, burn more calories and torch fat with incline training.

Escalate your calorie burn with this fat-torching stair workout.

Oxygen caught up with women’s running pioneer Kathrine Switzer to find out why so many women are running races in the U.S.

Determining your optimal work-rest intervals for HIIT.

Kick your love handles to the curb with this do-anywhere cardio kickboxing workout.

Tone up and lean out with this fun Spinning routine.

High-intensity interval training (HIIT) is an effective and time-saving training method, but is it possible to overdo it?

Winter is here but that doesn’t mean you have to coop yourself up in the gym. You can still do plenty of firming, lifting and swimming with these out-of-the-gym fall activities.

Get better results fast with Tabata training – your ultimate cardio. Follow Jessica Smith in this video to get an amazing four-minute cardio workout!

This do-anywhere plyometric workout will scorch major calories, fast!

Mix up your cardio session and build a heart-pumping workout on the fly with these 3 ideas.

Science supports it, your body responds to it and it saves you time. Learn the truth about high-intensity interval training, and hop aboard the interval bandwagon.

If you've always wanted to try running to get that cardio burn, but weren't quite sure how to begin, we've got just the guide for you!

Get the most out of your cardio workout with these two high-intensity interval routines.

Whether you're just starting on the road to fitness or you've been trotting it for years, we've got the perfect treadmill plan for you.

Burn calories, gain energy and work your full body by heading outdoors for a power stroll.