Einstein's theory that the faster you go, the slower time flows is not correct. I can give his example. You're standing near a clock. Then, you start speeding up, and what you see, is the faster you go, the slower the clock ticks. When you reach speed nearly that the speed of light, it seems that clock is almost still, because light can't catch up to you. Now imagine you stop. What happens? The light catches you and the time seems to flow faster than normal. If you travel near the speed of light to slow down time, you lose distance. The speed doesn't effect the time flow. Clock is only a tool to measure time.