Q:To the person who was giving you crap about the tribal piercing/stretching: They are exposed to different things than we are so they tend to have immunity against things that we may not. It's been their way of life for so long that the traits for immunity have been passed down genetically. An example of differences in immunity would be when the conquistadors first started coming to the Americas and the diseases that THEY were immune to were killing off the Inca & Aztec peoples. FYI.
Seriously, your point, it’s incredibly valid. And true.