Crook setting with hip flexion into extension (Core/pelvic floor stabilization, flexing/extending leg, lifted, supine)

Lie on your back with your knees bent and feet flat on the floor.
Ensure your knees and feet remain hips width apart.
Take a deep breath in, allowing your belly to rise.
As you exhale, gently tighten your abdominal and pelvic floor muscles.
Maintaining this contraction in your muscles, bring one knee in towards your chest, then lower it straight down onto the floor.
Repeat this movement with your leg, ensuring you do not lose the contraction in your abdominal and pelvic floor muscles.