Pick a hill – the more diverse the terrain, the better. Run up it hard, then walk down for recovery. Pretend you're running after prey or away from a predator. Repeat a dozen times or so, depending on distance and disposition. Jump over or duck under imaginary obstacles like a fallen tree, attacking animal, or overhanging brush to increase the firing speed of your nervous system.
Credit: Getty Images
Powered By ZergNet
Best Places to Live
Surf Towns, Reborn Cities, and Mountain Meccas Where Life is Good
Plus: Inside Climbing's Toughest Triumph
ON NEWSSTANDS NOW
Bill Nye's Life Advice
Sign up to receive the Men’s Journal newsletter and special offers from MJ and its marketing partners.