Relaxing the low back muscles. The low back supports the weight of the upper body and provides mobility. The lumbar spine/low back is a complex…

Relaxing the low back muscles. The low back supports the weight of the upper body and provides mobility. The lumbar spine/low back is a complex…
Muscle cramp and muscle spasm: Three types of muscles make up the body. Cardiac muscle makes up the heart. Smooth muscle cells line the blood…