What is that tingly feeling i get when someone does something for me?

The tingly feeling you experience when someone does something kind for you is often related to the release of feel-good hormones like oxytocin and dopamine. These chemicals are associated with feelings of happiness, connection, and gratitude. This response can enhance your emotional bond with the person and create a sense of warmth and appreciation. It's a natural reaction that reinforces social bonds and promotes positive feelings.