thanks! i think i figured it out though. Lets say i was moving close to the speed of light (not taking into account the whole mass change thing), then to me, everything would seem to slow down, and therefore, i would actually slow down. The faster you move, the slower your external and internal clock, which is why i would still be younger then a person watching me. My whole body wouldnt be moving at the same time it was when i wasnt moving, but would be working much slower, which is why einstein found that if he rode on a light beam, he would only see a still picture of a photon (i think it photons right?) of light. Thanks! (at least i think thats right)
