The daily rise of loads does not require as much physical training conditions, unless we work with very heavy elements, but to know clearly certain concepts, to carry out it of a healthful way. In that sense, the ergonomics and the departments of labour risks have been dedicated to disclose advice not to injure to us with this movement. Taking certain precautions at the time of realising the movements the injury risk can be avoided, or be at least fallen. Very instinctively, when we are going to move an important weight, we concentrated ourselves enough, and we took more precautions, than when we crouched ourselves to take a paper of the ground and, nevertheless, also we can here be made damage, because we underestimated normally it, we do and it anyway, without taking care of the movement. For that reason, the first aspect to consider is the concentration, to know that we do at any moment. The gesture to incline and to straighten themselves, although is without moving weight,  can damage our back, reason why it is not necessary to clear importance to it. Whenever we are going to take something that is in the ground or a level inferior, we must try to bend  us to incline  forwards. This is first thing that we must remimd. If we inclined, the legs remain almost prim and the flexion of the trunk is realised inclining to us from the lumbar vertebrae that are the zone with more weak mobility and to yield at the time of “bending the back”. It will continue…