olympics

Age, genes and gender are some factors that influence the competitive attitudes of 5,000-meter Olympic runners, above, as well as everyday people.
la-he-top-dog-20130216-001

( Wally Skalij / Los Angeles Times )

Age, genes and gender are some factors that influence the competitive attitudes of 5,000-meter Olympic runners, above, as well as everyday people.

  • Email E-mail
  • add to Twitter Twitter
  • add to Facebook Facebook
  • add to StumbleUpon StumbleUpon