On an upcoming trip to Europe, I have a 4 hour layover in JFK. Is there any place to go for a work-out, steam, shower, etc. I know the Marriot at EWR will sometimes let you use their nice health club for $10. Just wondering if there was anything similar at or near JFK. This is really a wonderful way to start a long trans-Atlantic flight for those that haven't tried it. Alternatively, does anyone have an extra Crown Room pass to trade? Can trade for an America West club pass or UA 50% off hotel cert. Thanks.