Nicholas DiNubile of the School of Medicine says one may become vulnerable to "boomeritis" by age 40 without the proper amount of exercise.<br><br><a href='http://www.nytimes.com/2006/12/19/health/19brody.html?_r=1&oref=slogin' target='_blank'>http://www.nytimes.com/2006/12/19/health/19brody.html?_r=1&oref=slogin</a><br><br>