Rip Esselstyn is a lot of things: son to legendary heart surgeon Caldwell Esselstyn; former firefighter; professional triathlete, New York Times bestselling author, manly man – and plant-pusher. His ...

Rip Esselstyn, a firefighter and triathelete, speaks with WSJ's Jeff Trachtenberg about his new book, "The Engine 2 Diet." In it, he says the best diet is a plant-based one.