Karim Khan talks to Steven Blair, professor at the Arnold School of Public Health, South Carolina. Professor Blair discusses the wealth of evidence he’s built up on the benefits of exercise, why physical inactivity is a bigger problem than obesity, and how much and of what we should all be doing. 0.51 Why physical inactivity is a greater health problem than obesity 3.20 Why physical inactivity is an important factor in causing the obesity epidemic 6.18 How the World Health Organisation is waking up to the fact physical inactivity is a major health problem 8.47 The impact of genetic makeup on the benefits gained from physical activity 10.44 The benefits of physical activity in those over 60 11.52 How much and of what sort of exercise should we be doing to get the benefits? See also: Physical inactivity: the biggest public health problem of the 21st century http://bit.ly/11yeqrJ Relationship between low cardiorespiratory fitness and mortality in normal-weight, overweight, and obese men http://bit.ly/10vSKQ4 Changes in Physical Fitness and All-Cause Mortality http://bit.ly/XT6yQS Physical Fitness and All-Cause Mortality http://bit.ly/Zl6gEo WHO Global status report on noncommunicable diseases 2010 http://bit.ly/i5ZiVf Effects of physical inactivity and obesity on morbidity and mortality: current evidence and research issues http://bit.ly/XT6HDM Is physical activity or physical fitness more important in defining health benefits? http://bit.ly/17UmOFe How Much Physical Activity is Good for Health? http://bit.ly/10vT29B

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