High-Intensity Interval Training (HIIT)

Workout Routines

This M&F Writer Tried a Reality Star's HYROX-style Workout

Love Islander and gym owner Adam Collard shares this confidence-building gym session.

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Full-Body Exercises

The 5 Best Bodyweight Exercises for Improved Cardio

When you don’t have equipment, turn your body into a fat-burning machine.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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Workout Routines

This Half-hour Floor Workout will Both Build and Burn

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

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