Here are five exercises from his book The Cool Impossibleto help you..

Pistol Squats

  Illustration: Danilo Agutoli

Using poles for balance, stand with your right forefoot on a stability disc. Extend your left leg forward, then squat as if sitting in a chair. Do three sets of 25 on each leg.

Slant-Board Leg Lifts

  Illustration: Danilo Agutoli

Stand with your left forefoot on a slant boardwith the slant facing right. Lift your right leg sideways. Repeat with the slant facing left. With forward slant, lift your bent knee up toward your chest. Do 25 reps per leg per position.

Hip Rotations

  Illustration: Danilo Agutoli

With your left forefoot on a stability disc, lift your right knee up toward your chest. Rotate your right hip 90 degrees to each side, keeping your knee as high as possible. Do three sets of 15 rotations for each hip.

Exercise-Ball Lunge

  Illustration: Danilo Agutoli

With your left foot on the floor and your right leg on an exercise ball, roll the ball backward and squat your left leg. Do three sets of 25 on each leg. Harder: stand on a slant board. Hardest: stand on a stability disc.

Slant-Board Balance

  Illustration: Danilo Agutoli

Stand with your right forefoot on a slant board. With the slant facing left, hold for two minutes per foot. Repeat with the slant facing right and then front for two minutes each. Harder: one pole. Hardest: no poles.

Thanks to Frank Bures and Outside Magazine: http://www.outsideonline.com/2039766/5-moves-stronger-feet?utm_source=facebook&utm_medium=social&utm_campaign=facebookpost
featured image by wisegeek.com