Medically reviewed by Jennifer Steinhoff, MDThe lumbar spine includes the five vertebrae in your lower back numbered L1 to L5 ...

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.

Whether you're into character design, game art, anatomy drawing ... Trump asks Supreme Court to block order requiring US to bring back man mistakenly deported to El Salvador Kurt Russell delights ...