Get your little whippersnapper harnessing his or her energy in a constructive, athletic direction. Join this Turtle Hill studio for classes in almost any sport, even ones you wouldn't think a city kid could play! This certificate good for $100 off a basic or sports development class when registering for the full fall or spring session. For new students only, not redeemable for cash or sport equipment. Not to be combined with other certificates or offers. Expires March 2013. Visit www.catsny.com for a schedule and more information.