Celebrity Trainer Don-A-Matrix — Pics By: Jessie Alcheh March 5, 2019 5:27PM EST 1 of 5 Don-A-Matrix Courtesy of Body Armor Don-A-Matrix poses for Body Armor sport drink, which he serves as an ambassador for. March 4, 2019, 1:35PM 2 of 5 Don-A-Matrix Courtesy of Body Armor Celebrity trainer, Don-A-Matrix poses at his Los Angeles studio, wearing Body Armor gear. March 4, 2019, 1:35PM 3 of 5 Don-A-Matrix Courtesy of Body Armor Don-A-Matrix drinks Body Armor, his go-sto sports drink to stay hydrating inbetween and during workouts. March 4, 2019, 1:35PM 4 of 5 Don-A-Matrix Courtesy of Body Armor Celebrity trainer Don-A-Matrix poses for Body Armor sport drink, which he serves as an ambassador for. March 4, 2019, 1:35PM 5 of 5 Don-A-Matrix Courtesy of Body Armor Don-A-Matrix instructs an outdoor workout using the Bosu Ball with Body Armor. March 4, 2019, 1:35PM Click to Subscribe to Get Our Free HollywoodLife Daily Newsletter to get the hottest celeb news.