Just like the Foo Fighters and The Chemical Brothers, both of whom regularly feature in her playlists, Heather’s classes ROCK. As does she. One moment you’re at Glastonbury, the next you’ve been transported to a US army boot camp with a Major General from Brooklyn. “One, two. One, two.” She galvanises her class, pushes the button and demands the best of you. Totally recommended. Much fun. Occasionally intense. Always energising, Best spin instructor, ever.