Staying active amps up your productivity, a good reason to hit that noontime cardio class or take hourly stretch breaks Don’t stay cooped up all day. Take a brisk walk around the block on your break. The frosty air will hit the Refresh button on your energy levels. Instead of inhaling your lunch on the fly, leave your work at your desk, and enjoy a healthy meal and some relaxing chitchat with a friend or coworker. You might just solve that work crisis between bites of kale salad.