Time Travel and Fasting: Metabolism in Cryogenics and Time Dilation in Relativity

In cryogenics, it is well understood that high metabolism accelerates cell turnover and aging. Various doctrines and philosophies encourage seasonal intermittent fasting not only for sacrificial or spiritual purposes, but for health reasons encoded in their wisdom (eg. fasting is known to boost the immune system as a temporary self defense mechanism to fight off infections). Of course one can argue that the wisdom of these traditional philosophies are serendipitous rather than architecturally put in place. In simple terms, the longer you fast, the slower the metabolism, the longer you live under the assumption that you are somehow still getting the required nutrition. Also, if you negate the health benefits of aerobic exercises, cryogenics suggests that aerobic exercise (like running, continuous jumping etc) contribute to aging. posthumously, the health benefits of aerobic exercises (maintaining a healthy circulation system) outweigh the aging effects of metabolism. Somehow if you are trying to live longer, you should find a way to slow down metabolism but still maintain a healthy circulatory system.

An alternative option is why not jump in to the future? Well, time relativity is verifiable and may help us to develop time machines that take some of us to the future (time dilation), but is impractical right now due to mechanical limitations since achieving a basic Lorenz factor of two i.e exchanging one second in the moving vessel for two seconds for everybody not in the vessel implies traveling at approximately 86% the speed of light. Contrast this with the idea that our fastest vessel barely achieves 60,000Km/h = 0.00556% the speed of light. Other than Biological techniques, a combination of fast motion and gravitational field will be required to achieve any practical time machine for future time travel. I am a firm believer that time travel to the past is an impossibility, even though some theoretical physicists will suggest otherwise (using warm holes and what not).
Share your thoughts.