When the Galactic Research and Analysis Committee, or GRAC, had first gotten word on a newly accepted sentient species into the federation, they wasted no time in sending the federation a request to conduct analyses and research these so called “hoomans” or “terrans.” Through their research they’d found out that humans have the ability to naturally strengthen their bodies. It was common for other alien species to use cybernetic enhancements or completely mechanical replacements to give them selves an advantage. At first the alien researches had assumed it was some kind of process that involved rapid cell replication,a mass production of proteins and control over the endocrine system, all of these being found in the human body during tests. However, after asking one of their human volunteers directly how they enhance their bodies strength, they received an answer they never would’ve guessed. “Oh! You mean working out? To put it bluntly we perform repetitive tasks that put strain on our muscle fibers. The strain causes small tears in the fibers and after a few days of rest, sometimes even a week, they’ve healed stronger than they were before. In the meantime we repeat the process with another of our body while the other heals. Some of us will do this for a few months and even a few years and rarely lifetimes until we decide we’ve had enough” The alien researcher was at a loss for words, their tri-forked tongue having tied itself into a knot. They’d attempted to wrap this newly discovered information around their Octo-lobed brain only to find it still didn’t make sense. This species will voluntarily over work and DAMAGE their limbs only to repeat this process with the others while the damaged heals?! And continue to do this for months?! YEARS?!? LIFETIMES?!?!