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"Some people maybe need a little bit of a push, so I'm gonna give them one!" said 27-year-old Stacy Berman, a physical trainer who will be standing at 86th Street and Central Park West at 5:30am today. "I also have the people that are just ready and willing to go as far as they can, and then I'm gonna jump on their backs and make them jog with me on their backs," she said somewhat enticingly. "It's a tough-love approach to training."