Intervals & Circuit Training
LATEST STORIES
The 6-Minute Sweat Workout (Video)
Learn the moves for this high-intensity power-training routine designed to boost strength and agility in no time flat.
The 6-Minute Sweat Workout
Work your body head to toe with this minimalist strength-and-conditioning blast, which includes lateral jumps, side-to-side squats, and burpees.
How to Do a HIIT Workout
Get more results in less time with high-intensity interval training.
3 Bears Kettlebell Workout: A Cardio and Strength Circuit
All you need is three kettlebells and 10 minutes to tackle this fat-burning cardio workout.
Shadowboxing Cardio Workout
Jab! Cross! Hook! Learn how to throw these punches — and combine them for a high-intensity workout.
The Spartan-Strong Workout (Video)
Learn the moves for this intense strength circuit inspired by the popular obstacle-course race.
The Workout: The Cardio Challenge
This HIIT routine reimagines the treadmill jog, burning fat and building endurance in a quick workout.
A 2-for-1 Kettlebell Workout for Full-Body Fitness
This full-body routine can flip from fat-burning to strength-building — simply by switching up your tempo and rep range.
New Tabata Routines
A personal trainer offers several suggestions to spice up your Tabata workout — plus, a four-move Tabata workout.
The Minimalist Workout (Video)
Learn the moves for a minimalist circuit that offers a full-body strength and cardio workout you can do just about anywhere.
A Natural Movement Scavenger-Hunt Workout
Get fit and have a blast with this adventurous outdoor workout.
The Scavenger-Hunt Workout (Video)
Watch as fitness editor Maggie Fazeli Fard, RKC, demonstrates all the moves from our scavenger-hunt workout.
Strong, Fast, and Fit: Month 6 Moves (Video)
Learn all the moves for the final month of our Strong, Fast, and Fit program and get ready to maximize your results.
Strong, Fast, and Fit: Finish Strong (Month 6)
The final four weeks of our six-month training program will help you reach peak form.
Strong, Fast, and Fit: Month 5 Moves (Video)
See the moves for Month 5 of our “Strong, Fast, and Fit” program in action.
Strong, Fast, and Fit: Push to the Summit (Month 5)
Month 5 is the toughest in our six-month training program, with longer workouts, challenging exercises, and fewer days off. Get ready!
Strong, Fast, and Fit: Month 4 Moves (Video)
See all the moves for Month 4 of our Strong, Fast, and Fit program in action.
Strong, Fast and Fit: Reset (Month 4)
In Month 4 of our six-month training program, you’ll ease up a bit as you prepare for the final push to the fittest, strongest, healthiest you yet.
Strong, Fast, and Fit: Month 3 Moves (Video)
See the moves for Month 3 our Strong, Fast, and Fit workout series, and get ready to up the intensity.
Strong, Fast, and Fit: Into the Fire (Month 3)
Month 3 of our six-month training program ramps up the intensity, integrating — and testing — your hard work from the last eight weeks.
Strong, Fast, and Fit: Month 2 Moves (Video)
This online exclusive for Month 2 of “Strong, Fast, and Fit: Turn Up the Heat” features new exercises and combo workouts that will take your fitness to the next level.