The one move J.Lo’s trainer has her do to tone *everything* from the waist up

Celebrity trainer David Kirsch shares how to do the super-challenging move he has famous clients like J.Lo, Kate Upton and Heidi Klum do to tone their core, arms, and chest.

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Photo: Instagram/@jlo

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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Photo: Stocksy/ZQZ Studio

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