Why do people always need to go to the toilet?

In order to remove metabolic products into the external environment and not to pollute the internal environment of the body with excess or toxic substances.

One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.