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HIIT

High-Intensity Interval Training

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.

The Total-Body Tabata Circuit Workout to Send Your Body Into Overdrive

This workout will crush you in the best way possible.

Do This HIIT Workout On Water to Seriously Activate Your Abs

Steal these core-busting pool moves and do at home.

The Cooler Workout That Will Wow *Everyone* at Your BBQ

Then take a beer out of it when you're done.

Celeb Trainer Lacey Stone Will Help You Sculpt a Rock-Hard Body

Steal this 45-minute workout from the "Revenge Body with Khloé Kardashian" trainer.

The Tough Plyometric Training Challenge Your Legs Will Love to Hate

Turn up the burnt by getting off your feet—and into the air.

The Yoga Boot-Camp Workout That Features Heart-Pumping Cardio and HIIT

If ever thought yoga was "too easy," we dare you to try this.