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from POPSUGAR Fitness

A Kick-Your-Own-Ass Treadmill Workout — No Trainer Needed

Increase your endurance, raise your heart rate, and rev your metabolism with this interval workout. This ladder run — with the speed intervals increasing in duration as the workout progresses — is designed to push you out of your comfort zone

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from SELF

10 HIIT Treadmill Workouts That Are Boredom Busting

The Sidewinder Treadmill Workout from 10 Boredom-Busting Treadmill Workouts: Workouts: Self.com

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from Verywell

4 Calorie-Blasting Treadmill Workouts to Shake Up Your Routine

You'll be dripping with sweat and burning lots of calories with these treadmill workouts.: Sprints Treadmill Workout

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from SELF

10 HIIT Treadmill Workouts That Are Boredom Busting

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