Different genes control the development of different characteristics of an organism.
1. you don’t want to be cut off from the world at all times. and even if you think someone else isn’t as clean as you’d like then you can take precautions and wash your hands after interacting.
The myth that eating late at night is popular because it is widespread, this makes people believe it. With influences such as Oprah herself advising against late night snacks, we're influenced. The myth is false because overall a calorie is a calorie. People believe that we don't lose or burn calories as we sleep, but this is false. We do lose calories.
Responsible actions to take whilst eating late at night is to avoid it, or best eat a calorie-controlled snack. Research has shown that late-night eaters tend to make poor food choices and aim for the yummy (but unhealthy) stuff.
Hope this helped!