Doctors Guide to the Internet-Patient Edition. This site has a broad range of topics including some that are in the popular press like prostate cancer and smoking. Go Ask Alice. This site is Columbia University's. It has a broad scope of health and medical topics.
Information is passed in a personal, irreverent tone.
It is my impression that these devotees perpetually overstate the health benefits and rewards of physical activity. In 1996 the National Institutes of Health convened a Consensus Development Panel on Physical Activity and Cardiovascular Health. The panel developed its conclusions based on the scientific evidence presented in open forum and review of scientific literature. The panel reported that accumulating scientific evidence indicates that physical inactivity is a major risk factor for cardiovascular disease, the nation's number one cause of death. The panel concluded that all Americans should engage in regular physical activity at least appropriate to their capacity.