lower, strength, low impact
• Begin by standing your feet shoulder-width apart, toes facing forward.
• Find your balance and lift your heels up as far as possible. Hold for 2 counts and slowly lower your heels back to the starting position to complete one rep.
• Maintain your posture upright and stationary at all times.
• Make sure that the balls of your feet are solidly planted on the edge of the step.
You should feel your: