They know exactly what to say and when to say it to help you push hard at times when you're feeling ready to give up (at scale — they can't see you if you're not in the studio). They choose fun, energetic songs to keep you motivated throughout. They order their playlists in such a way that you push yourself just past your limit and have just enough time to rest.
Being a good instructor is like being a good comedian or even stage actor, where you're feeling the energy of the audience and optimizing for a given outcome. In comedy, it's laughs. In fitness, it's energy. In either case, people come back wanting more.
They know exactly what to say and when to say it to help you push hard at times when you're feeling ready to give up (at scale — they can't see you if you're not in the studio). They choose fun, energetic songs to keep you motivated throughout. They order their playlists in such a way that you push yourself just past your limit and have just enough time to rest.
Being a good instructor is like being a good comedian or even stage actor, where you're feeling the energy of the audience and optimizing for a given outcome. In comedy, it's laughs. In fitness, it's energy. In either case, people come back wanting more.