Medically reviewed by Kashif J. Piracha, MD Key Takeaways The iliopsoas muscle is the major flexor of the hip joint, made up of the iliacus and psoas major muscles.Pain in the iliopsoas muscle can be ...

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 ...

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 ...

Everyone loves a good stretch. The practice feels good because the act of stretching activates a network of relaxing and calming nerves and increases blood flow to one's muscles. Stretching also ...

Tight hip flexors, especially a deep muscle called the psoas, can silently stress your spine. Here's why this muscle deserves more attention—and how to strengthen it. Lower back pain is often blamed ...

Odds are very high that at some point in your life, you will experience lower back pain. In fact, it is estimated that approximately one in four Americans are experiencing lower back pain right now.

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. Katrina Carter, DPT, FNS, is ...

If you're searching for “how to stretch lower back,” you probably already know that sitting all day is killing you. If having your butt glued to a chair is something you can’t escape, you know ...

Lower back pain can easily land you in bed with a stiffening inability to get up, but research shows that stretches for lower back pain can help prevent and ease discomfort, especially when you do ...