Maybe, says a new Swedish study.
The study examined 1.2 million Swedish men born between 1950 and 1976. It tracked the boys (then men) over time, looking at physical fitness, intellectual ability and life success, while controlling for things like heredity and family influences. Researchers found a positive link between cardiovascular physical fitness and intellect.
The question, of course, is which came first. Are smart boys more likely to exercise, or does exercise create smart boys?
More research is needed, but if you ask me, the results make sense. Cardiovascular exercise improves blood flow. Blood carries oxygen. The brain, like any other organ in the body, needs blood and oxygen. Stands to reason, then, that a healthy blood supply might improve brain function.
At least, that's what I think. What do you think?