Ballet-coaching and aerobics doesn’t appear to be a natural pairing, but this high-Vitality video proves it’s possible, and the result is really a solid work out. Kym Perfetto Although her Instagram feed is full of badass biking pictures, biking is only some of NASM-Qualified trainer Kym Perfetto's YouTube information. (Though, https://www.youtube.com/watch?v=SOixqgDkUL0