Rob "Gronk" Gronkowski is a tight end for the New England Patriots. In 2011, he set the single-season record for touchdowns by a tight end, as well as the single-season record for receiving yards by a tight end. That same season, he became the first tight end in NFL history to lead the league in receiving touchdowns. Learn how Gronk does it, along with his training regimen, what he does in his spare time, and more.