Hi JOA, > I made that question because I wanted to know if the prolongation > of the exercise could help to get faster a better control. > From the very beginning, I have been working with a countdown > clock. At the fifteen minutes it notifies me about the end of the > exercise. But I was thinking that if I extend that period of time > from fifteen to thirty minutes, for example, it could help me to > get a better control of the exercise because you have a longer > time to get the ten minutes of control required by Bardon to > consider that the exercise has been controlled. Actually, that was pretty much what I meant: to give oneself the time to get the hang of it, to not necessarily keep each practice session exactly to five or ten minutes. However, one thing I realized after awhile is that "practice doesn't make perfect, *perfect* practice makes perfect." In other words, doing it with the right approach is more important than doing it longer. > Personally, I don´t like very much that idea of not having any > sort of time limitation, because then you can be one hour, two > hours, three hours, etc, doing the exercise and you can get strong > headaches or the brain completely exhausted if you don´t get the > hang of the exercise. I guess I assume that one would stop when one feels finished or tired. David