Stand with your feet hip-width apart. Step forward with your right leg and slowly lower your body until your right knee is bent 90 degrees. Make sure your front shin is vertical. Don’t allow your front knee to move forward of your ankle. Pause, then lift up and bring your back foot forward so that you walk a step. This is one rep. Do at least 10 or walk for distance or time. Alternate the leg you step forward with each time. To make the exercise more challenging, hold a water-filled 1-gallon jug (a “character builder”) at your chest or (even harder) hold it with arms extended over your head as you perform the walking lunge.