¿Por que nos da comezón?

The video explores the biological and psychological aspects of itching, detailing how histamine and nerves are involved in the sensation. It discusses the evolutionary origins of itching, its role in protecting against parasites, and recent research findings. The video also covers various causes of itching, including allergies and viruses, and examines the psychological aspects, such as contagious itching and its mental triggers.

What new insight or understanding did you gain from this video?