Fitness instructor and YouTuber who is known for having invented the 21 Day Fix diet. She is a certified personal trainer, and is a member of the Beachbody community of fitness trainers. She created her eponymous YouTube channel on September 27th, 2013, where she often posts workouts and dieting tips. She began dancing at the age of 14. She attended a small liberal arts school to study dance, where her career ended after a back injury.