"With the upcoming 2012 Olympic Games, sport and physical activity will attract tremendous worldwide attention,” said Pedro Hall, the study’s lead researcher. "Although the world will be watching elite athletes from many countries compete in sporting events… most spectators will be quite inactive.
Professor Lindsey Davies, the president of the UK Faculty of Health also supports the charge against massive inactivity.
"We need to do all we can to make it easy for people to look after their health and get active as part of their daily lives," she said. "Our environment has a significant part to play. For example, people who feel unsafe in their local park will be less likely to use it."
Many critics question if lack of exercise is just as dangerous as smoking.
Although the number of deaths related from smoking and inactivity are similar, smoking has a lower rate of people than the number of those not exercising. This makes smoking more risky.
"When it comes to preventing cancer, stopping smoking is by far the most important thing you can do," said Dr. Claire Knight, a spokesperson for Cancer Research UK.