While speaking at the Inaugural Beacher Vitality Happy & Healthy Summit on Saturday, Christopher Schwarzenegger opened up about his fitness journey over the past six years.

Christopher Schwarzenegger has defied them all with a dramatic weight loss transformation that's inspiring others. Related: Patrick Schwarzenegger Shares How Health and Fitness Shaped Season Three of 'White Lotus' This past weekend,

Christopher was utterly unrecognizable in recent photos—and said cutting out one thing from his diet made a huge difference.