Ballet-education and aerobics doesn’t seem to be a natural pairing, but this high-Power video proves it’s doable, and The end result is usually a strong exercise. Kym Perfetto Although her Instagram feed is filled with badass biking pictures, biking is just some of NASM-certified trainer Kym Perfetto's YouTube material. (Though, https://www.youtube.com/watch?v=uYfofCHSGLc