Lateral Step-Up with Kick - Strengthen the outside quad

Stand with your left side next to a step that's eight to 12 inches high. Step up with your left foot, driving the right foot in the air so it's even with your waist. Step down and repeat 8 to 12 times on each side.

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Runners World: Training for Runners

Runner's World presents "Training for Runners". Each week we give fitness advice to runners of all types of age and skill.