These two routines will hit muscles throughout the body while also cranking up your heart rate and building your endurance.
Keywords: Burpees, Tire Flips, Workouts, Exercise, Fitness Notice the technique involved >>
Given the choice between competing in a traditional 5k or a course that includes mud, freezing water, and electrocution, more and more Americans are choosing the latter. How extreme races have taken weekends over. A unique challenge >>