Do Olympic athletes have strong brains as well as strong bodies? Research has shown the benefit of exercise in improving cell health (including brain cells), boosting the brain’s natural anti-anxiety drug, and strengthening the aging brain. But we still have a lot to learn about exactly how exercise changes the brain. Recently, a team of scientists from the National Institutes of Health (NIH) conducted a series of experiments to try to tease apart the processes that are at work when we exercise. To do this, they essentially tricked the muscle cells of mice into thinking they were doing aerobic exercise….