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Your annual physical is on the calendar, your FitBit is synced, and you're such a dedicated yogi that your cute Bikram teacher even remembered your birthday. And, you're living in the big city, which means you haven't had to worry about getting Lyme Disease or poison oak all summer! But, even for sheltered urbanites, sneaky health risks abound. The best way to boost your immunity (aside from downing that extra kale smoothie) is by paying attention. Here are seven often-forgotten health hazards you're likely to face as a savvy city dweller — and some tips to keep them from sneaking up on you like wellness whack-a-mole.