Exercise reduces your risk of cancer, via the nytimes:
Parsing the men’s activity levels, the researchers determined that, after controlling for cigarette smoking, fiber and fat intake, age, and other variables, the most physically active men were the least likely to develop cancer, particularly of the gastrointestinal tract or the lung. Even more striking, the intensity of the exercise was key. The more arduous it was, the more protective it proved. Jogging was the most strenuous activity studied, fishing among the least. The men who jogged or otherwise exercised fairly intensely for at least 30 minutes a day had “a 50 percent reduction in the risk of dying prematurely from cancer,†says Sudhir Kurl, medical director of the School of Public Health and Clinical Nutrition at the University of Kuopio in Finland and one of the study’s authors.
I’ve been riding my bicycle for 30 to 60 minutes for 6 of the past 7 days
