Who wants to dress to impress for a workout? Who wants to pay big bucks for the privilege of getting sweaty in public? And who really thinks that prestige matters when it comes to pumping iron? Nobody here, obviously. The Y is an ego-free oasis of self-improvement, and if its diverse membership wasn't so darn friendly and outgoing, you might never be able to tell the secretaries from the attorneys, or the techies from the art gallery owners. Camaraderie usually stems from butt-kickin' yet fun classes such as hatha yoga, Cycle Reebok or power step, but even if you're a loner who shows up to do some time on the treadmill or in the weight room, you'll be part of a community before long.