Have you ever heard of CrossFit®? With more than 7,000 gyms in the U.S. and 13,000 worldwide, you probably know at least one person who participates in this group-focused fitness method, which has attracted a massive following of loyal members and has become an official sport. These athletes, called CrossFitters, are very vocal about how workouts are challenging, effective and best completed as a group, so, even if you don’t belong to the CrossFit community, you can quickly recognize that CrossFitters are loyal fans and cheerleaders for this brand.