Exactly how many seconds to maintain your max heart rate for in a HIIT workout, according to trainers

What to know about your max heart rate and how long you should sustain it for in a HIIT workout, according to fitness trainers.

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If Your Fitness-Focused New Year’s Resolution Isn’t Working, Try These 5 Expert-Backed Tactics

New Year's resolution not working out for you? Don't stress. Try these five New Year's resolution alternatives backed by experts.

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4 Beginner Treadmill Workouts for When It’s Too Cold to Get Your Steps Outside

Can't get your steps in outside? Don't worry: Try one of these expert-backed beginner treadmill workouts instead.

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Photo: Stocksy/Bo Bo