There has always been a dream that there could be a pill to replace exercise. New research suggests a molecule called betaine, naturally produced by the kidneys, may do just that. According to a new ...

Dr. Peter Attia's book "Outlive" argues that exercise is a powerful tool for longevity and quality of life. Poor cardiovascular fitness carries a greater relative risk of death than smoking, according ...

Plus, the best exercises to get you started.

Research tracking thousands of adults found that staying fit lowered mortality and liver disease risk among drinkers—though ...