From your own experiential perspective, the laws of physics are stacked against you if you ever hope to achieve immortality. From a thermodynamic perspective, every system tends toward increasing entropy-and-disorder, and the only way you can combat that is by constantly inputting an external source of energy. In other words, everything about you, including your body and mind, is destined to eventually break down. Although you might try to leverage the power of relativity to dilate time and slow its passage, that will never work from your individual perspective; time only dilates or slows relative to an observer in a different reference frame from your own. No matter how quickly you move or how deep of a gravitational field you enter, you’ll still experience the passage of time as normal: at the rate of one second per second. While this may confine a human’s dream of immortality to solutions that rely on technological enhancements, bio-hacking your body, or science-fiction level technology that relies on novel physical laws and/or phenomena, there’s still plenty that relativity has …