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
The 2014 Adventure Issue
From Iceland's Highway 1 to Utah's Canyonlands, an epic itinerary for modern explorers.
Plus: Building a Bigger Action Hero
ON NEWSSTANDS NOW
The Interpreters We Left Behind
The Rise of Cyclocross
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