It’s easy to feel overwhelmed by the variety of cardio machines in gyms these days. Treadmills, rowers, stair climbers, ellipticals, vertical climbers, skiing machines, indoor bikes—the list goes on, ...

Mercey Livingston is a health and wellness writer and certified Integrative Nutrition Health Coach. She's written about fitness and wellness for Well+Good, Women's Health, Business Insider, and ...