Sit on the floor and bring the soles of your feet together in front of you, letting your knees fall open out to the sides. Hold your feet or ankles with your hands and sit up tall through your spine rather than rounding your back forward. Gently press your knees down and out with your forearms, or lean your torso forward slightly from your hips, to deepen the stretch through your inner thighs and groin. Keep the movement slow and steady rather than bouncing your knees up and down. Everyone's knees rest at a different height off the floor depending on hip flexibility — how close yours get to the ground isn't the point, the stretch through your inner thighs is.