[Resistance band supine leg raise] mainly exercises the buttocks. Lie on your back with your knees bent and feet flat on the floor, hip-width apart. Wrap the resistance band around the bottom of your right foot. Hold both ends of the band with both hands. Lift your moving leg as high as possible, closer to the ceiling, then slowly lift your hips and hold for a few seconds. Take it back, do 15 times, switch legs and repeat.
