Greg Presto is a sports and fitness reporter and video guy in Washington, D.C. who thinks fitness should be fun and an adventure, whether you're on a trail, in the gym, or on the living room floor. He is an ACE-certified personal trainer whose work has appeared at Men's Health, Women's Health, Shape, Prevention, Reebok, USA Today, and other publications. Follow him on Twitter at or send story ideas to gregpresto@gmail.com.