Best for: Fight Club-meets-nightclub vibes
While the mere thought of a high-intensity boxing class has us seeing stars, this snazzy gym takes things outside the ring, with a 50-minute session that sees a combination of bag-work and hardcore HIIT. By that, we mean six-punch combinations and breathers that look like burpees and bicycle crunches - all made worth it by a whooping calorie burn (promise). The vibe? Industrial interiors embellished with neon LED lights, dancehall soundtracks and the sort of instructors that will push you beyond the limits of what you thought possible. Classes will set you back £22, and there are Kobox clubs in Chelsea and the City, too.
16 Baker St, W1U 3BL