Power Up Your Runs

Power Up Your Runs

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. Add a challenge by including heel raises: Lift your left heel, then the right, then lift both together twice.