While a fast, sweeping decent may give you the feeling of flying, don't be the cyclist who rides propped up with his or her elbows out like a set of wings. Not only is it not a very efficient riding position, it just looks terribly awkward. According to a paper from the Institution of Mechanical Engineers, gripping the brake hoods while keeping the forearms horizontal resulted in a 13.4-percent reduction in required power compared to the reference posture. #science