arms and upper back, but there is one piece of equipment that focuses on your lower core muscles — a back machine. Back machines feature a large, raised pad for your chest to rest upon and ...

Just like the proteins in our muscles, which convert chemical energy into power to allow us to perform daily tasks, these tiny rotary motors use chemical energy to generate force, store energy ...

This type of pain has many possible causes. Organs in the lower back, including the kidneys, can cause pain. Muscle or spine damage and nerve damage, including sciatica, can also cause pain. Lower ...