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High-Intensity Interval Training

Do You Have to Do HIIT to Be Fit?

Expert trainers' answer might surprise you.

How to Do a Hot Sauce Burpee, the Hardest Burpee Variation You'll Ever Attempt

Ever heard of the hot sauce burpee? You'll never look at the spicy stuff the same way again.

Here's What You Should Be Eating After a HIIT Workout

Learn how to refuel after a killer sweat.

This Bodyweight Tabata Workout from Shaun T Is the Ultimate HIIT Routine

Get right to the point with these heart rate-boosting exercises.

The One Trick for Getting More Out of Your HIIT Workout

These mental tricks from Jen Widerstrom will transform your workouts.

This 20-Minute HIIT Tempo Workout Plays with Speed In an Insane New Way

Alternating between painfully slow reps and explosive bursts is the workout upgrade you didn't know you needed.

This 10-Minute Circuit Might Be the Hardest Cardio Workout You Ever Do

All you need is a box or step—and a lot of determination.

The F45 Training HIIT Workout You Can Do In Any Gym

Prepare to sweat your *peach emoji* off

How Self-Care Is Carving a Place In the Fitness Industry

More gyms and fitness studios are starting to prioritize overall well-being.

The 10-Minute Low-Impact HIIT Workout for Beginners

FYI, low-impact doesn't necessarily mean easy.

How to Boost Your Metabolism Using Just a Pair of Dumbbells

This inspired approach to intervals will have you racing for recovery time.

Do the Risks of HIIT Outweigh the Benefits?

Some experts are taking issue with America's favorite workout.

7 Cardio HIIT Exercises That Burn Fat and Reduce Stress

This hard AF workout is worth the sweat.

Common CrossFit Mistakes Most Beginners Make (and How to Avoid Them)

If you want to make WODs a part of your fitness life, then listen up.

This Tabata-Strength Circuit Will Help Boost Your Metabolism

You've never gotten such a good workout in under 30 minutes.

What's the Difference Between HIIT and Tabata?

Test your fitness brain power and learn some workout tricks, too.

Agility Cone Drills That'll Skyrocket Your Speed (and Calorie Burn)

Nothing beats cone drills for boosting coordination while burning big calories

The Strength HIIT Workout with Triple the Body Benefits

This triple-threat workout from celeb trainer Chase Weber will refresh your idea of how hard HIIT can be.