Fast-twitch fibers help with explosive movements like sprinting and weight lifting. Genetics and training influence the distribution of fast-twitch and slow-twitch muscle fibers. Doing strength ...

After 50, building and keeping muscle becomes more about working with your body than pushing against it. Hormones change, ...

With more than a decade of experience, Nelson covers Apple and Google and writes about iPhone and Android features, privacy and security settings, and more. How many times have you been on a road trip ...

Car and Driver's annual list of the best new vehicles is here, and it's packed with options for every lifestyle, budget, and ...