① Legs Low, Brace

• · Straight legs hover low above the mat
• · Press the low back flat — hold it there
• · Raise the legs if the back wants to arch

② Left Leg Up, Right Down

• · Small, quick kicks — a few inches each
• · Keep the legs long and the toes pointed
• · Low back never lifts off the mat

③ Right Leg Up, Left Down

• · Steady flutter rhythm — don't rush
• · Belly stays braced the whole set
• · Stop if the low back starts to arch