Using this simple trick helped this runner go from last on her team to running a 4:52 mile

A 4:52 mile time may seem like an impossibility to most. It also seemed to be out of the realm for Jacqueline Katzman, a cross country and track & field runner from Cornell University. Until she used this psychological trick to get out from behind the pack. 

Check out Katzman's other tricks to get out there and start running. 

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