As we get older, the speed with which we think and recall and retrieve things does slow down. One of the critical factors that controls change in the brain is attention. Attention is actually regulating what is allowed to change. That is why learning is so important.
Duration : 0:10:1

WOW… This video …
WOW… This video speaks about the same sort stuff that Iis done in Chi Kung practice. Interesting to see that modern science is now agreeing with the ancient Chinese ideas.