Lie on your back on the Reformer with your head supported and spine in neutral.
Place the heel of your working leg on the foot bar, aligned with your hip, toes pointing upwards.
Position the non-working leg in tabletop: hip and knee at 90 degrees, shin parallel to the floor.
Inhale to prepare. As you exhale, press through the working heel to extend the leg while keeping the non-working leg in tabletop.
As you inhale and bend the working leg, slowly thread the non-working leg over the foot bar, reaching the thigh toward the chest and lifting the foot over the bar without touching it.
Exhale and return the non-working leg to tabletop as the working leg extends again.
On the next repetition, as you bend the working leg, thread the non-working leg under the bar, reaching toward the floor without contacting the bar.
Return the leg to tabletop as the working leg extends again.
Continue alternating over and under with each repetition, maintaining control and pelvic stability throughout.
Complete repetitions as prescribed by your physiotherapist.