<p>Physical inactivity is a key determinant of health across the lifespan. A lack of activity increases the risk of heart disease, colon and breast cancer, diabetes mellitus, hypertension, osteoporosis, anxiety and depression and others diseases. Emerging literature has suggested that in terms of mortality, the global population health burden of physical inactivity approaches that of cigarette smoking. The prevalence and substantial disease risk associated with physical inactivity has been described as a pandemic. National Academies of Sciences, Engineering, and Medicine. 2013. Educating  Student Body: Taking Physical Activity and Physical Education to School. Washington, DC: The National Academies Press.</p>