Lie on your back with your knees bent and feet flat on the floor.
Secure a resistance band to a point to one side of you.
Hold the other end of the band in both hands, with your arms fully straightened in front of you.
Tighten your abdominal and buttock muscles, and lift your hips up into the air into a bridge.
Control the movement against the pull of the band, ensuring your knees, hips and shoulders remain square to the ceiling, and your arms straight up.
Lower your hips back down and repeat.