Washington, Oct 1: The brain, just like muscles, works harder during strenuous exercise and is fuelled by lactate, rather than glucose, according to a study by researchers from Denmark and The Netherlands.
According to the authors, not only does this finding help explain why the brain is able to work properly when the body's demands for fuel and oxygen are highest, but it goes a step further to show that the brain actually shifts into a higher gear in terms of activity.