"Who is likely to be fitter: a lazy 20-year-old or an active 50-year-old? New research from the Norwegian University of Science and Technology's K.G. Jebsen Center of Exercise in Medicine provides statistical evidence that the 50-year-old can be every bit as fit as someone 30 years younger. But exercise -- how much, and how intense -- is the key, say K.G. Jebsen Center researchers."

http://www.sciencedaily.com/releases...1011074635.htm

(Chris Carmichael shared this on the twitter.)