Flex delivers live video HIIT classes to be taken at home. Participants all tune in wearing Bluetooth heart rate monitors resulting in a real-time "score" leaderboard visible throughout. Available on smart TV boxes and native mobile apps with full casting support, it's as easy to view on your large television screen as Netflix. Instructors call out viewers by name throughout. This is backed by a digital community with competitions, rewards, challenges and sharing and supporting of personal journeys.