The weather is starting to scare even the hardiest New Yorkers into hibernation. But before we exchange the booze-heavy fall social calendar for weekends and evenings on the couch, hot cocoa, DVR'd television, and being woefully boyfriended/girlfriended, it’s high time to have an adventurous day in the city -- whether it’s solely for the purposes of getting action (in which case, you will undoubtedly succeed) or to throw a curve ball to your “friends who brunch.” With the right attitude (and full pocket flasks for the ride), recruiting an adventure partner/team should be easy. Some of the destinations are ambitious, some easily manageable; all require a bit of a trip from downtown Manhattan, or wherever you happen to wake up after weekend benders. Take your pick, get outside, and Twitter away for your followers who'd rather nurse hangovers from the comfort of their homes.