Stand upright with your feet together, your back straight, your hands on your hips, and your abs engaged.
Pull your abs toward your spine and squeeze your right glute as you kick your right leg straight back behind you, moving slowly and with control. Keep your foot flexed (don't point your toe).
Lift your heel as high as you can without arching your back, just enough so you can feel your right glute start to work.
Lower your right leg back to the starting position.
This counts as one rep. Do two sets of 10 reps on each leg.
To make this move more challenging, place a resistance band just above your ankles.