Read the original article: iOS 14.5: How to Use AirPlay 2 With Apple Fitness+
With the release of watchOS 7.4 and iOS 14.5, Apple has added AirPlay 2 support to the Apple Fitness+ app. That means Apple Fitness+ workouts can be streamed to AirPlay 2-compatible television sets from an iPhone or iPad, allowing workouts to be viewed on a larger screen without requiring an iOS 14.5: How to Use AirPlay 2 With Apple Fitness+