Please choose the correct ending to complete the given sentence: Pets and Animals: [header] How to throw a football [title] Stretch before throwing. [step] Focus on stretching your whole body-not just your arms. Football throwing is a complex physio-mechanical process that uses multiple muscle groups, including your core, legs, and shoulders.

Ending1: [substeps] Don't push yourself too hard at the start, unless you have to. Focus on stretching just your arm, legs, shoulders, and neck muscles. Ending2: When you throw your ring finger and pinkie finger on the middle laces. Your middle finger next to the top lace. Ending3: This means that it is important to stretch your whole body before throwing the ball to make sure that you are strong enough to run through the whole football routine. [substeps] Try stretching your quads and hamstrings with a light stretch after your initial run through or take a warm-up walk. Ending4: In order to stretch your muscles, you need to know how to push or pull them. [substeps] Put some warm water on the faucet or tap and wait until it's warm before you begin.

Answer format: ending1/ending2/ending3/ending4