spinal

In most fitness routines are exercises as well known as the spine.

But what are really the spine?
In fact, there are several muscles in the lower back portion. Not a muscle in concrete, so should not be taken to the spine as a single muscle.

Now, this set of different muscles are important in protecting the spine.
Although this muscle is very important to be taken into account is required almost 24 hours a day, keep standing up is hard work. The stay upright post means that our muscles is compromised continuously to maintain and balance your trunk.

Working these muscles is important, but it makes sense to work as you normally do, creating a flexion of the lumbar ext. This exercise can cause an overload, result in pressure injury which is located in a few discs.
The best way to work this muscle is to generate movements in which they are prepared to act as as: trunk rotations, inclinations forward generating a continuous flexing of the entire vertebra column (so lilting).

Avoid heavy weights and the continuous repetition of the spine, you suffer in this way a continuous pressure in a few vertebrae which are required and suffer more wear, excluding conprensión that must withstand the intervertebral discs.
The column must work together and not sectorize enormous strains on a single point.