Why Do We Itch?
Season 5 Episode 22 | 4m 57s | Video has closed captioning.
It’s one of the most annoying sensations our bodies can feel, but does anything feel better than when you scratch an itch? Ok, maybe *some* things. But itching and scratching are up there. How does this weird sensation work? And what is itching for?
Problems Playing Video? | Closed Captioning