Are you as efficient going uphill as you are down? Learn what to look out for the next time you're riding uphill. Active.com hosts the world's largest directory of sports and recreational activities, facilities, venues and classes, which includes more than 66,000 races, leagues, tournaments, camps and other recreational listings in over 80 sports and 5,000 cities.<br /><br /><br /><img src="http://ll.broadbandsports.com/images/23776_thumb.jpg" alt="Sitting and Standing on Hills" title="Sitting and Standing on Hills" width="150" height="90" alt="Sitting and Standing on Hills"/>
