Supersize your muscles with the Thick and Wide Workout! It's short but it's super effective. Complete 4 reps of cossack squats on one leg and then 4 reps on the other. Do the same with shoulder taps. If you feel that your body wobbles during shoulder taps, stabilize your torso by taking a wider stance with your legs. It's all about endurance and being able to perform all of the exercises with the best form you can master.
Extra Credit: Keep the plank - don't drop your body to the floor - all the way through the last row.