So, bit of an egg – chicken thing here. Is it not smart to exercise – is it not true smart people know exercise can help attain and maintain mental and physical well-being?

This from the New York Times:

Exercise seems to be good for the human brain, with many recent studies suggesting that regular exercise improves memory and thinking skills. But an interesting new study asks whether the apparent cognitive benefits from exercise are real or just a placebo effect — that is, if we think we will be “smarter” after exercise, do our brains respond accordingly? The answer has significant implications for any of us hoping to use exercise to keep our minds sharp throughout our lives.

Source: Does Exercise Really Make Us Smarter? – NYTimes.