I love free fitness classes in NYC- fitness classes are so expensive and all of the coolest experiences I've had have been free fitness events. Going to these events by myself when I first got to New York City were a great way to push myself out of my comfort zone because it's intimidating to walk into something like without knowing what to expect.
Do it. Always do it. Go with a friend if it'll help ease you in, but I can tell you right now, you don't need em. So if they bail, don't bail out, you've got the balls.
Hudson River Park's Pier 46 has a lululemon series I'm all in on:
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