State of mind

After the heat debate online last evening, I have a second thought about the training in long run

I believe that too many mileages (50 to 120 Km per week) only cause back and knee injuries and does not guarantee a good result
That's why I don't buy the theory of LI Kar Lun or FUNG Hong
I guess muti training is more suitable for ordinary runners like us
Moreover state of mind is another important matter for a marathoner. Many "slow" sport such as Tai Chi, Yoga could enhance the concentration and state of mind of a marathoner
That's why those free divers used yoga to enhance their state of mind to dive deeper and deeper
Just to share with U my thinking indeed