The word "aerobic" means "with oxygen." That's why aerobic exercises are medium to low-intensity activities that we do for an extended period, where our body uses oxygen to generate energy. Think ...

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. While plenty of ...

It’s no secret that exercise, even in small doses, can improve your mood. Researchers even have a name for it: the feel-better effect. And while any physical activity — a walk, a swim, a bit of yoga — ...