Exercise appears to spark a whole-body anti-aging cascade, and scientists have now mapped out how it happens—and how a simple oral compound can mimic it. By following volunteers through rest, intense ...

China launched live-fire drills around Taiwan on Monday that it said would simulate a blockade of the self-ruled island's key ports, prompting Taipei to condemn Beijing's "military intimidation." The ...

Beth Skwarecki is Lifehacker’s Senior Health Editor, and holds certifications as a personal trainer and weightlifting coach. She has been writing about health for over 10 years. Zone 2 training is ...