10 Manliest Races In North America
8 Craziest Adventure Run Obstacles
Fitness Challenges That Could Kill You
Check out the sights, the sounds and the intensity at this popular obstacle-course competition.
More than 10,000 of the event's competitors have shaved their heads in the past two years as part of the campaign to raise money and awareness for the Wounded Warrior Project.
Intense Training: Burpees And Tire Flips
How To Build Upper Body And Core Strength
How To Tackle Balance Beams, Trail Runs
Remember these from your school gym class? Now just about every obstacle-course race has them as part of the mix.
Build Upper Body Endurance And Prep For A Mud Run