Supporting your body weight with your hands, roll up and down from the bottom of your hip bone to the top of your knee, just under your right butt cheek. (fitwirr.com)
Same cues are used; golf ball between butt cheeks, credit card under heel. (sportstarsmag.com)
Lower your butt an inch above the mat, and squeeze your left butt cheek to lift your hips back up. (health.com)