How does short network video harm people's physical health and mental health?

Network short video is really very easy to hurt people's physical health and mental health. First of all, if they are eaten and spread, they are very likely to endanger people's health. Another person who plays parkour and extreme sports is very easy to kill people. For example, some people jump off tall buildings. Well, this may be a novelty. However, it is possible for others and other audiences to imitate them. Without relevant good protective measures, people who imitate them will be hurt by their lives.