This is your last chance to enjoy a free group fitness class in Primrose Hill, so read on! Do you need something a little different to motivate you and give you a little kick up the backside? Fever has teamed up with lululemon and Metabolic London to bring Londoners free fitness classes, each class being held at a different London park! What you get: • Back to basics body weight HIIT class with Group HIIT specialist Metabolic London • 45 minutes of High-Intensity Interval Training High-Intensity Interval Training is a method of exercise that consists of short periods of intense work followed by short periods of rest. It promises that you'll torch fat, build strength, burn up to 1000 calories, as well as have loads of fun getting your sweat on with a fab group!