Allergic To Cardio? Get Your Sweat On With These 4 Gym Cardio Challenges

If you’re looking for some gym cardio challenges to spice up your workout routines, you’re not alone. Plenty of people prefer the rippling glamor (and Instagrammy results) of bicep curls and ab circuits. The idea of hitting the treadmill for anything more than five minutes (and burn away all my gains?!) can seem downright counterproductive.

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