Boston Celtics head coach Joe Mazzulla is famous for his intensity, both on and off the court. For new players like Luka Garza, Mazzulla’s style and methods can come as a shock. Garza got his first taste of Mazzulla’s madness during training camp, when the coach had them do something called a “warzone” drill. Garza described the crazy drill during Thursday’s episode of “The Young Man and the Three” podcast. Now that the word is out, maybe other teams will start doing their own version of the drill, although perhaps less extreme.