Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to measure lower body strength [title] Stand with your back flat against a wall. [step] Keep your feet about a foot away from the wall and shoulder width apart. [title] Bend your knees and slide down the wall until you are in a squat position.

Ending1: [title] Move your legs forward as far as you can go in one fluid motion with your knees bent and your ankles bent. [step] This will transfer the measurement to your abdomen. Ending2: [step] Be sure to keep the small of your back pressed firmly against the wall with no arching. Pay careful attention to your knees to make sure they are aligned properly over your toes. Ending3: [title] Hold a dumbbell in each hand. [title] Slowly lower yourself to a upright position until the dumbbells are directly under your shoulders. Ending4: [step] They should be slightly off the floor. Remember that your thighs should be perpendicular to the wall and reach slightly below your hips for support.

Answer format: ending1/ending2/ending3/ending4