The more you accelerate, the slower your proper time will pass. This effect is called time dilation. And, yes, in principle, this means if you run in a circle, you’ll age more slowly. But it’s a tiny effect, and I can’t recommend it as an antiaging strategy. By the way, this is also why time passes more slowly near a black hole than far away from one. That’s because, according to Einstein’s principle of equivalence, a strong gravitational field has the same effect as a fast acceleration.
