It could be to avoid injuries. One reason why there are several rules in
exercising is to ensure that a person will not get injured during a
workout. Injuries can occur when one is
either handling too much weight, doing the exercise wrong, not using proper
equipment or does not have a partner or trainer assisting him.
Pessimism would be the term. A pessimist often focuses on the most dangerous or bad outcomes in life, letting it cloud their happiness and judgement occasionally(being a mindset/lifestyle and all).
Explanation:
she will also follow her friends and do whatever they do. teenage thinks that they are the best and they can do whatever to be best infront of others