HOW: Stand with a wall in front of you and your feet shoulder-width apart. Place both hands on the wall for support. Slightly lean into the wall as you alternate lifting one knee up to your chest while staying upright. Alternate each leg coming up for the prescribed amount of reps.
FEEL: You should feel your leg muscles working to maintain your balance as weight.
COMPENSATION: Stay in an upright position, don’t slouch forward.
