What should be the bonus sixth day of Christoph's circuit of self-improvement?

(1) StudioBounce- "Choreographed cardio with strength intervals on and off a trampoline."

(2) AquaZumba - The Zumba program fuses hypnotic Latin rhythms with water aerobics.

(3) Jazzercise Fusion - A circuit-based high interval class that fuses high octane dance moves with muscle work.

(4) Roundhaus - Round based cardio kickboxing.

(5) Hot Barre - Pure Barre in a 90 degree room, "this class gives new meaning to #barresohard."