Add Strength
to Your Run
Adding wall sits to the end of every run will strengthen your quads, hamstrings and glutes, improving your speed and endurance.
Lean against a wall with your feet shoulder-width apart, then squat until your knees are bent at 45 degrees. Hold for 30 to 60 seconds; work up to doing 10 sets.
(Source: FitnessMagazine)
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