Joseph H. Pilates said: "The most important thing is not what you are doing, but how you do it."
The figure of the Teacher certificated by a serious and recognized school, is crucial.
His technical skills, knowledge of the whole method, including equipment, and its ability to adapt and "cut to size" a training protocol is the essential precondition for good results.
It 'very dangerous practice any gymnastics without careful analysis of the general conditions and postural defects that are possibly to be corrected because, performing contraindicated exercises, the situation could get worse and with this the associated painful symptoms.