age 22 is peak. After 25 is downhill - though I feel ok. http://www.telegraph.co.uk/news/newstopics/howaboutthat/4995546/Old-age-begins-at-27-as-mental-powers-s

age 22 is peak. After 25 is downhill - though I feel ok. http://www.telegraph.co.uk/news/newstopics/howaboutthat/4995546/Old-age-begins-at-27-as-mental-powers-start-to-decline-scientists-find.html http://www.telegraph.co.uk/news/newstopics/howaboutthat/4995...