As we discussed recently, the idea of retirement - given ZIRP (or even NIRP) - remains further and further away for many middle-aged men and women in America. But Michael Cembalest has some sage advice for those who are passing 50 years old with whimsical views of Viagra-commercial-like retirement settings any time soon. Based on recent research from the Munich center for the economics of aging, one should keep working as long as possible (the precipitous drop in cognitive function once retirement is hit is enormous) - which also offers some insight into why the long-term unemployed suffer so much more in ever getting back into the work-force. More importantly, it seems as we pass that magic 50 year-old barrier, so men's cognitive function plunges far quicker than women's - especially in immediate and delayed recall (where did I leave my keys?). The bottom line is, if you want to succeed later in age: get a job; keep a job; work that job longer; and become a woman!