Fit at Every Level: 3 Steps to Amazing Legs
Stand facing a chair. Lift your right leg, knee up and foot flexed, and place your heel on the seat. Soften your standing knee and lift your right foot off the chair (as shown) until you feel your quadriceps engage. Holding the lift, bend left knee slightly, then straighten it.
Do 10–15 reps, then switch sides and repeat to complete 1 set; do 3 sets.