Dr. I-Min Lee is Professor of Medicine at Harvard Medical School and Professor of Epidemiology at the Harvard School of Public Health. Her research primarily focuses on the role of physical activity in preventing chronic diseases and enhancing longevity, and in women's health. She has served on various national expert panels addressing physical activity and health, including the 1996 Surgeon General's Report on Physical Activity and Health, the 2007 updated recommendation for adults from the American College of Sports Medicine and the American Heart Association, and the 2011 position stand from the American College of Sports Medicine. She served on the Physical Activity Guidelines Advisory Committee writing the scientific report on which the 2008 US Department of Health and Human Services physical activity guidelines – the first comprehensive physical activity guidelines by the US federal government for Americans – are based. She also has provided her expertise to international panels formulating physical activity recommendations, including those from the WHO, Canada and Singapore.