Your body can only ever exist in one physical space at one time. We call that place the present moment. Your mind, however, can be in multiple places simultaneously, recalling past events, or predicting future outcomes. When the mind and body are not in the same place, we often fail to recognize important details in our environment—like sign on the freeway signaling us to exit, or the look of someone in need. The capacity for mental time travel is what distinguishes humans from other mammals and allows us to do things other species cannot.