Add Yahoo as a preferred source to see more of our stories on Google. Whether you’re a college athlete constantly in training mode, you’re preparing for a marathon or putting in extra work at the gym, ...

Heimlich is a contributor for TIME. Heimlich is a contributor for TIME. A hard workout can come back to haunt you. When you wake up the next morning and try to get out of bed, everyday motions like ...

Let’s get one thing straight: Muscle is muscle. Despite what many fitness influencers may have you believe, there’s no such thing as "lean muscle" or "bulk muscle." It’s all made from the same stuff.