Please choose the correct ending to complete the given sentence: Sports and Fitness: [header] How to dress for snowboarding [title] Wear a helmet whenever you are pushing yourself. [step] Many snowboarders choose not wear helmets but they are often making a big mistake. While snowboarding, you may catch an edge and you could slam your head on the snow very hard, potentially causing brain injuries.

Ending1: If you fall, however, you may seriously injure yourself. Unless you have broken a bone, be sure to do some damage to any dangerous sections of your body. Ending2: If you're just learning, you're going to fall and you should protect your head. If you're pushing your skills in the terrain park, you're going to fall, and no one wants to bang their head on the rail or land on it after falling twenty feet out of the sky. Ending3: Remember that you are hanging on for dear life, especially if you attempt to prevent a fall, flip, or bumps on dangerous slopes. Avoid these irritating accidents by always always wearing a helmet. Ending4: Some people, however, think snowboarding is a totally safe sport, especially if you are caught quite often. If you're not sure, err on the side of caution.

Answer format: ending1/ending2/ending3/ending4