7. Orangetheory Fitness
No. of locations: 450+
According to their own words, they are one of the unique gyms having special programs for cardiovascular and strength training which differ from others by, for example, being the only gym which monitors heart-rate during the exercise and applying science-based training intervals. They also work in small groups and small studio sizes, which offers a more relaxed atmosphere. As the name says, they are based on science. Nowadays there are Orangetheory Fitness gyms in 39 states and also in other countries including Mexico, UK, Australia, Dominican Republic, Canada, and Colombia.
antoniodiaz/Shutterstock.com
