HOW: Begin by lying on your back with knees bent, feet flat on the floor. Take the knee of one leg towards the chest and the elbow of the opposite side arm towards the feet. Using a ball or yoga block, connect the elbow and the knee for a static hold. From here, take the other leg towards the chest, getting to a right angle at the hip and at the knee. Holding the right angle at the knee, slowly lower the heel to tap the floor. Return to knee to chest position.
FEEL: You should feel your front and side abdominals. You should feel the front of the hips working as you drive your knee towards your chest.
COMPENSATION: Avoid letting the shins sag down. Avoid any strain in the neck, option to rest the head. Avoid arching your low back.