Why Does Scratching Your Back Feel So Satisfying?

The video explains the process of itch formation and response, highlighting the role of sensory neurons, histamine, and blood flow. It discusses how scratching triggers serotonin release, creating a rewarding sensation. The video also explores the impact of stress on the body, particularly the back, and how scratching can alleviate tension and improve mood.

Describe the effects of stress on the back muscles as mentioned in the text.

What are the benefits of scratching your back, even without an irritant?