Lay on the floor with one foot placed on a box or a bench and the other leg extended in the air. Press your heel into the box or bench and lift your hips into the air by contracting your glutes. Attempt to get yourself far enough off the ground so that your body is almost in a straight, diagonal line. You should not experience a great deal of tightness in your back with this exercise. If you are feeling it primarily in your back, don’t raise yourself as high.
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