Re: Training Frequency
In learning theory and skill acquisition, research supports that several shorter sessions equate to better skill/content retention that one long block of time. So perhaps its not the amount of time, but how you divide that time.
Also, its about the quality of that time. Many people spend many hours at the dojo and on the mat, but not really training (more socializing). So you may also have to qualify the intent and intensity of the quantified clock time and number of days.
As in running, more is not necessarily better. Too much, too fast, too soon often leads to overload, lack of progress, and early burn-out.
Human engineering for skill acquisition is an interesting topic. Please keep us posted on your findings.