1 - Lie on your back with your hips and knees bent to 90 degrees and your arms extended straight up toward the ceiling.
2 - Place a stability ball between your hands and knees, gently pressing into the ball to create tension.
3 - Brace your core and press your lower back lightly into the floor while keeping your neck relaxed.
4 - Slowly extend your opposite arm and leg away from the ball until they are just above the floor, maintaining contact with the ball using the other hand and knee.
5 - Pause briefly, then return your arm and leg to the starting position without letting your lower back arch.
6 - Repeat on the opposite side in a controlled manner.
7 - Continue alternating sides for the desired number of repetitions or time.
