1. Obesity
the result of the experiment found that every ten years, there is a 5% decrease in Chilidren’s ability to run within limited time.
It can be clearly seen in boys and girls from nine to seventeen years old and linked to fatness, with some countries that eat more junk food than other countries. So The problem is largely one of Western countries, but some parts of Asia like South Korea, China and Hong Kong are also seeing this phenomenon.
Lead researcher Dr. Grant Tomkinson of the University of South Australia's School of Health Sciences said “children needed to be inspired to do more active exercise.”