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.

The muscles in your lumbar spine work with ... treatments such as injections or surgery for your lumbar spine. Understanding the basic anatomy of the five lumbar bones that make up your low ...

According to Skye, this power move is great for the posterior chain, aka the muscles that run down the ... If you have tight hammies or back pain, Hamm says this move can help loosen things ...