We know spinning is all the rage these days – we can barely make it through an hour without hearing "soul," "flywheel," "swerve,"… you get the picture. But if spinning isn't your cup of tea, and you haven’t signed up for a classpass yet, here are a few ways to keep your exercise routine exciting without breaking the bank. Most of the classes in here are $35 or less, though there may be one or two that are a little more costly.