Fitness

7 HIIT-Style Treadmill Workouts

Get ready to sprint.

Trainers share their favorite HIIT treadmill workouts.
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Doing HIIT treadmill workouts will take your cardio sessions to the next level, says Barry's trainer Andrew Nunez. Instead of running at a single pace, you’ll walk and run — sometimes on an incline — in spurts of tough efforts to improve your endurance. Here, 7 workouts to try.

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90-Second Repeats

Running coach Claire Bartholic likes this routine to build strength.

- Start flat at brisk walk, 10 minutes.

- Raise incline 4-6%, run at medium-high effort, 90 seconds.

- No incline, walk 2 mins.

- Repeat pattern 4 to 10 times.

- Cool-down walk, 5 minutes.

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