Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to push yourself when running [title] Repeat positive mantras to yourself. [step] Pick a certain phrase that motivates you and repeat this in your head before, during, and even after each run. Keep it short and positive in tone.

Ending1: Look in the mirror and repeat this word to yourself to remind yourself to relax and get through the challenge. [substeps] For example, instead of saying, " i can do this, " say to yourself, " i am strong and great. Ending2: You might say, " i can do this, " or " keep it going. " once you establish a breathing pattern, you can say this phrase in between breaths to keep the pattern going. Ending3: Practicing this will help improve your confidence, so remind yourself when you've done this in the past. [substeps] For example, say to yourself, " i am doing these steps because i am confident and i can do this! I am great at running. Ending4: When you're not running, chances are, you're going to end up feeling scared and a bit depressed. Even if you don't expect to actually feel faint when running, it helps to have that phrase on your mind at all times.

Answer format: ending1/ending2/ending3/ending4