High-Intensity Interval Training (HIIT)

Workout Routines

This Trainer will Help You 'Sleigh' Your Christmas Conditioning in '12 Days'

Give this holiday-classic-themed challenge from Donnie Flaherty a try.

Read article

Workout Routines

HIIT it This Weekend with This 15-Minute Dumbbell Workout

Erik Bartell pushes you to maximum effort in just a quarter of an hour.

Read article

Workout Routines

This Lower-Body Workout will Leave You Pumped in Under a Half Hour

Trainer Erik Bartell has come up with the ultimate 20-minute legday session.

Read article

Workout Routines

Push to the Next Level with This High-intensity, Lower-Body Workout

Erik Bartell’s half-hour HIIT routine is all about helping you break plateaus.

Read article

Workout Routines

This Dumbbell-only Workout Will HIIT Your Entire Body in Six Moves

Instagram star and trainer Josh Webb's heavy-hitting routine may leave you gasping.

Read article

Workout Routines

Military Monday: Hit Your Legs, Lungs, and Core in Under an Hour

Infantryman and trainer Chris Kellum introduces his Hybrid Warrior training plan.

Read article

Workout Routines

Become a HIIT Machine with This Half-Hour Upper-Body Workout

Got 30 minutes? Give Erik Bartell's latest lung crusher your all.

Read article

Workout Routines

This Half-hour Floor Workout will Both Build and Burn

Trainer Erik Bartell has a challenging half-hour in store for you.

Read article

Workout Routines

Sprint Your Way to Blasting Fat and Building Athletic Power

Burn calories, build muscle, and get faster with these three HIIT workouts.

Read article

Workout Routines

Build Strength and Improve Conditioning With This 20-Minute Workout

All you need are a pair or dumbbells and a jump rope to get your sweat on.

Read article