Your back and shoulder is very beautiful. He has big muscles that work together with a small muscle. Like a painting, the back is very vulnerable. About 80% of people will eventually suffer from back pain, but this disease is the leading cause of disability among men under 45 years.

There are three reasons why it should be part of a group of people who suffer:

First, because it might include those less fortunate, being born with the development of the lumbar spine is not perfect. This condition would be a burden on the position of your lower back of each activity.

The second reason is the reward of your habits that are not "fun" lower back. (You know why you feel like a piece of wood stuck in his lower back after a day sitting at the computer, right?)

while the third reason, you do the exercise with improper technique.