Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to sprint [title] Choose the right shoes before you hit the track. [step] There are seemingly endless options when it comes to fitness footwear. For competitive sprinting, the most useful type of shoe is known as a " spike.

Ending1: " when sprinting, the increasing oxygen in your body flows into the foot's leg muscles and provides enough endurance to propel you. These running shoes have a higher building power to help propel you forward and increase your ability to sprint, and also help you to stay hydrated. Ending2: " it looks like a regular running shoe with pins under the toe which help you gain traction and improve your speed. These shoes are lightweight so that you can sprint faster. Ending3: " this is a word you will encounter with different patterns to take you from one track to another. The most widely used patterns include : [substeps] Runner dress pump foot high double leg sprinting fast to the end of the track [substeps] Outdoor running shoe away runner tap [title] Warm up and stretch. Ending4: " this is when you jump off the track, then jump on a ledge, followed by jumping off into a country exchange or mushroom hill. You don't have to wear a shoe as your competitive sprinting shoes.

Answer format: ending1/ending2/ending3/ending4