Experienced and novice runners should just trust their instincts, says a new study.
Our expert has tips to get you moving faster and more efficiently.
A young man with autism conquers the NYC Tri. His father tells the story.
Our fitness experts tackle your questions on replacing minimalist running shoes, intermittent fasting for fat loss, and yoga and hypermobility. Plus, help for weak wrists.
New research on mice provides clues to how excess body fat harms the human brain — and how exercise may help.