For people looking to get in shape with a new exercise regime, slow and steady used to be the received wisdom for long-term change. But judging by fitness trends that are sweeping across the parks, streets and gyms of the UK, the solitary morning jog is giving way to something more high-octane.
More gym-goers are signing up for fitness competitions, ranging from obstacle courses to high-intensity events and races, which combine cardiovascular exercise and strength training.
