Data-driven excercise? How tech is revolutionising fitness

Through apps and wearables, technology is creating a workout that’s more data-rich, smarter and convenient than ever beforeIt’s Monday lunchtime and gym-goers at Virgin Active in Moorgate, London, are grabbing a bike for their group cycle class. But this isn’t any ordinary class, where the teacher enthusiastically shouts instructions like “sprint” and “climb” and the backdrop is an uninspiring grey wall. This is the “Pack”, a class divided in