a. Side Plank
Lie on your side, supporting your weight on your elbow. Hold your body straight. If you can hold this for more than two minutes without sagging, you pass; less than two minutes, hit the Remedial Exercises (far right).
b. Stability Push-Up
Lie facedown on the floor. Extend your arms out from your shoulders, flat against the ground and bent 90 degrees at the elbows. Tighten your core while pressing through your hands, forearms, and feet until you rise off the floor in one board-flat motion into a slightly extended push-up position. If you have to roll up, you fail; if you can do it smoothly, you pass.
From a standing position, bend at the waist and place your hands on the ground. Keeping your arms and legs perfectly straightyour heels don't have to remain flat on the groundwalk forward on your hands until you're in a push-up position. Now walk your feet back up to meet your hands, keeping arms and legs straight, and stand back up. If you can complete the move without resting, collapsing, or sagging when outstretched, you pass.