Dr. Kenneth Cooper is pictured outside of his new Cooper Institute near Golden. He is the Dallas-based father of the aerobic movement that began in this country in the 70's. He recently established the research institute at Denver West near Golden which is headed by Dr. David Buller. He was interviewed about what is on his mind these days, how his personal fitness regime has changed as he has moved into his 70's and what he sees ahead for the country, fitness-wise, as the baby-boomers move into their 50's and 60's.  (Photo By Helen H. Richardson/The Denver Post via Getty Images)