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. It’s easy to almost ...

Jakob Roze, CSCS, is a health writer and high-end personal trainer. He is the founder and CEO of RozeFit, a high-end concierge personal training practice and online blog. The downward dogs and cat-cow ...

Lower-back pain can seem to come out of nowhere — especially if you’ve never experienced back problems before. But back issues are usually the result of a lifetime of normal wear and tear, poor ...

Lower back pain is one of the most ubiquitous health complaints in the world. In fact, the World Health Organization says that low back pain is the single leading cause of disability worldwide—but ...

Your lower ab muscles play a major role in supporting your core, back, and pelvis. Keeping these muscles strong—along with the rest of your core—can help promote good posture, protect your spine, and ...