If heart disease is the leading cause of deaths worldwide, physical inactivity isn’t too far behind, coming in at No. 4 on that dreaded list. According to a study published in the US National Library of Medicine in 2012, a third of the world’s population does not get enough exercise to stay healthy. This despite the fact that the global fitness industry is worth approximately $100 billion.
There have been movements worldwide encouraging people to take up some kind of physical activity as well as the introduction or arrival of several different forms of exercise that have lured more people into leading active lifestyles. The age-old favourites have been walking or running long distance, bodybuilding or even playing a particular sport, but an increasing number of people have taken to mixing low and high-intensity exercises for a more rounded workout.