Rest. "Blackjack" Benchmark WOD. Each round of this popular #bodyweight workout totals 21 reps (Push-Ups descending from 20, Sit-Ups ascending from. This could be a good idea, but I just push it up against the rail and it works fine. WARMUP: 4x 20 Jumping Jacks 5 Scap Push-ups Black Jack: Pushups (scale to knees) Sit-ups Cashout: 5 sets of plank and 10 dumbe. Rest. I did have to adjust the black rubber. . 40 segundos. The shoe came in good shape as well. 40 segundos. 20 segundos. Push Ups. Push Up Barras Paralelas + Soga Crossfit Rulemanes + Bandas. $ en 6 cuotas de $ Enjoy an amazing new free blackjack 21 game with full offline play and infinite rounds in single room with an awesome magic dealer following a casino circus. 20 segundos. The "Blackjack" benchmark WOD (aka: "Twenty-One"), named for the card game, can be done with any two movements - Push-Ups and Pull-Ups are just the most common. 21 BlackJack: Push ups-Sit Ups Sit Ups with Reach Ups.