Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to punch with speed [title] Get in your jab stance. [step] A jab is the fastest punch that you can throw. Slightly hunch your back with your knees bent.

Ending1: [substeps] If you are right handed, place the back of your right hand on top of your left knee. Rest your upper arms on this outer palm. Ending2: Keep your elbows facing inwards toward your body with your fists up and close to your face. Tuck your chin in to protect your jaw and stand on the balls of your feet. Ending3: [title] Continue to take long swings with your fist. [step] Aim for the eye between your top and bottom fingertips. Ending4: Imagine a small bell going off above your head and bend your elbows to punch. [title] Hold your wrist like a baseball bat.

Answer format: ending1/ending2/ending3/ending4