I was always a fan of Robert Munsch’s kids books, but I think my all-time favorite was Stephanie’s Ponytail (from which I have adopted the title of this blog, and am proud to quote often its mantra of self-confidence). Ponytails are awesome. They’re easy. They’re cute. They’re safe. But have you ever thought of the physics of ponytails? That’s right. The “balance of forces that shape and move the hair in a human ponytail” has been calculated by a US/UK team of four dear gentl