What type of exercise must you do, and how much?

After years of investigating aging populations, researchers’ answer to the question of how much is not much. If all you do is walk several times a week, your brain will benefit. Even couch potatoes
who fidget show increased benefit over those who do not fidget.The body seems to be clamoring to get back to its active Serengeti roots. Any nod toward this evolutionary history, be it ever so small,
is met with a cognitive war whoop. In the laboratory, the gold standard appears to be aerobic exercise, 30 minutes at a clip, two or three times a week. Add a strengthening regimen and you get even more
cognitive benefit. Individual results vary, of course, and exercising too intensely, to exhaustion, can hurt cognition. One should consult a physician before embarking on an exercise program. The data
merely point to the fact that one should embark. Exercise, as millions of years traipsing around the globe tell us, is good for the brain. Just how good took everyone by surprise, as they delved into the next question.