HIIT Training Workouts

6 Trainers Tell Us Their Favorite Lower Ab Exercises That Actually Work

6 Trainers Tell Us Their Favorite Lower Ab Exercises That Actually Work

By Erin Bunch

3 Exercises That Prove That a Simple Step Can Make Your Workout More Explosive

3 Exercises That Prove That a Simple Step Can Make Your Workout More Explosive

By Rachel Lapidos

The 4-Minute Tabata Workout That an Ex-Marine Swears by for 'Instant Sweat'

The 4-Minute Tabata Workout That an Ex-Marine Swears by for 'Instant Sweat'

By Rachel Lapidos

This 10-Minute Treadmill HIIT Workout Will Get Your Heart *Literally* Racing

This 10-Minute Treadmill HIIT Workout Will Get Your Heart *Literally* Racing

By Zoe Weiner

The 'Fantastic Five' Is Here to Add Some Excitement to Your Leg Day Workout

The 'Fantastic Five' Is Here to Add Some Excitement to Your Leg Day Workout

By Tehrene Firman

A Jump Rope Is the Fastest Way to Spike Your Heart Rate—These Are the 5...

A Jump Rope Is the Fastest Way to Spike Your Heart Rate—These Are the 5...

By Kara Jillian Brown

Jennifer Lopez's Trainer Demonstrates the Hardest Push-up Variation You've Ever Seen

Jennifer Lopez's Trainer Demonstrates the Hardest Push-up Variation You've Ever Seen

By Tehrene Firman

This Woman Set a World Record With a 4-Hour Plank—Here's Her Secret

This Woman Set a World Record With a 4-Hour Plank—Here's Her Secret

By Tehrene Firman

5 Challenging Ways to Use a Rower That Don't Have *Anything* to Do With Rowing

5 Challenging Ways to Use a Rower That Don't Have *Anything* to Do With Rowing

By Tehrene Firman

This Combo Workout Move Burns Your Triceps *and* Sets Your Lower Abs on Fire

This Combo Workout Move Burns Your Triceps *and* Sets Your Lower Abs on Fire

By Tehrene Firman

Training Like an Athlete Boosts More Than Just Your Strength—Here's How

Training Like an Athlete Boosts More Than Just Your Strength—Here's How

By Rachel Lapidos

This 4-Move Series Is Proof You Can Get a Full-Body Workout in 10 Minutes

This 4-Move Series Is Proof You Can Get a Full-Body Workout in 10 Minutes

By Zoe Weiner

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