Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to do balance ball dumbell chest press [title] Place the balance ball in an open area with free space. [step] There should not be any nearby clutter or objects that can cause harm if you roll off or stand up after using the ball. [title] Hold a dumbbell in each hand.

Ending1: [step] Your thumbs should be wrapped around the handle of each dumbbell weight. [title] Sit directly on top of the balance ball. Ending2: [step] Stand with your feet hip-width apart and a dumbbell in front of you. Hold it at this position for 30 seconds. Ending3: [step] Use your dominant hand to set up the swing. ( you can use a combination of both dumbbells and the v-grip grip if your biceps is stronger). Ending4: [step] Swing the dumbbell until the shoulder notch is. [title] Lift the upper arm so the hand elbow is bent.

Answer format: ending1/ending2/ending3/ending4