1
Start in a supine position (lying on your back) in water or on a mat. Keep your upper body flat with arms at your sides for support and balance.
2
Engage your core muscles and ensure your lower back maintains contact with the support surface. Position legs straight and relaxed.
3
Slowly lower one leg toward the starting position by flexing at the hip, allowing the quadriceps to lengthen under control while maintaining a neutral lower back.
4
Drive through the quadriceps to lift the leg upward by extending at the hip, raising the foot toward the ceiling while keeping the knee relatively straight. Return to the starting position with control.