First, the scientific basis is very unscientific. Watching funny videos can't improve immunity, so if people want to improve their immunity by watching funny videos, they should pay attention to exercising their judgment ability in peacetime, because this statement is very unreliable, and normal people will not question this statement.
Secondly, funny videos that are harmful to our health can really adjust our mood and kill our extra time, but if we watch funny videos often, it will also be harmful to our health. Watching funny videos for a long time will affect our normal work and study. Some people will forget the time when watching funny videos, often miss all kinds of serious things, and will not go out to exercise or enjoy the scenery because of watching funny videos. Therefore, funny videos actually do more harm than good, and funny videos will also affect many younger children. They don't have enough judgment to judge these children, so they will blindly follow suit, which is very unfavorable for their future growth.
Third, addicted to mobile phones, often watching funny videos can easily lead to mobile phone addiction. Sometimes, we just want to pass our fragmentation time through all kinds of funny videos, such as the time to go to the toilet or the gap between work, but it is easy to be attracted by these funny short videos, and then forget the business and brush the video for a long time, which will cause the problem of mobile phone addiction and affect our normal work for a long time.