CrossFit is a fitness program that uses functional exercises and high-intensity workouts to help you achieve your fitness goals. It's an inclusive community, which means anyone can join—even if they've never worked out before. The founder, Greg Glassman, built as a way for people of all levels to get into shape. It also eliminates expensive gym memberships and time spent on equipment. It's based on its five core values: progress over perfectionism, strength over weakness, functional movement over isolation movements, healthful eating habits over cheat days, and mind over matter.