Hot peppers contain capsaicin, a compound that binds to receptors in the mouth, throat, and stomach, triggering a burning sensation and pain. Capsaicin was originally created to protect the pepper plant from being eaten by animals and fungi.

When capsaicin binds to a receptor, it sends a signal to the brain that the body is in pain, which results in the burning sensation. The pain can range from mild to severe, depending on the amount of capsaicin in the pepper.

In addition to the burning sensation, capsaicin can also cause sweating, runny nose, and watery eyes. These symptoms are all part of the body's natural response to pain and inflammation.

Eating hot peppers in large amounts can also lead to stomach pain and nausea. This is because capsaicin can irritate the lining of the stomach, leading to inflammation and pain.

If you experience any of these symptoms after eating hot peppers, it's important to stop eating them immediately and drink plenty of water. If the symptoms persist, you should seek medical attention.