HOW: Begin by sitting on the floor with the knees bent, feet flat on the floor. Get your spine tall and straighten your arms at your side. Lift the front of the foot of both legs. Keeping a right angle at the knee, lift the knee towards the chest. Slowly lower back down to tap the heel.
FEEL: You should feel your front and side abdominals. You should feel the front of the hip performing the marches.
COMPENSATION: Avoiding letting the knee straighten. Avoid flexing and rounding your low back, stay tall through the entirety of the exercise