Your teachers: enlisted from across the country, from army trainers to power-lifters. Each with a bio and an appropriately muscle-toned pic.
The exercises are divided by said trainers and degree of difficulty. There's a wide range of workouts: abs, cardio, CrossFit, kettlebell. Even “Amazing Butt.”
There’s a play-along video segment for each workout, with verbal instructions and, admittedly, some truly awful techno (but hey: it’s only five minutes).
The initial app is free. Additional workouts are gamified: you start with 500 “points” to put toward additional tutorials, and you can earn more by finishing the videos presently at your disposal.
Or: just purchase the points.
Cheating’s pretty quick, too.