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. The upper back is an ...

For fitness purposes we can roughly divide the body into three sections: the lower body (legs), the core (abs), and upper ...

Have you ever noticed how your upper body feels weaker? Whether it is lifting heavy objects or performing everyday tasks, weak upper body muscles can make things hard for you. But don't worry—paying ...