CEO Ethan Brown tells ‘Fast Company’ how the new line, Immerse—which is pumped with plant-based protein, fiber, and more—is a logical next step. Fifty minutes into a training session at a gym in lower Manhattan, I’m doing burpees and clean-and-jerks while Beyond Meat CEO Ethan Brown—all 6 feet, 5 inches of him—is bear-crawling into pushups, then slamming a medicine ball to the ground from overhead.