Hip Extension – Straight Leg – Stability Ball by Sam | Jan 26, 2021 | Exercise, Glutes, Hamstrings, Training GuidesHow to do the Hip Extension – Straight Leg – Stability Ball?In doing the Hip Extension – Straight Leg – Stability Ball, lie face-up with legs straight on the floor, feet resting on the ball, hips raised off the floor. Enable your arms to rest...