DEXA is basically an X-ray of your body, high school wrestling is notorious for giving people the impression that they are at a way lower bf% than they actually are which leads to people saying “yeah I was at 10% bodyfat when I did wrestling because my coach said so”, at that percentage doing actual wrestling would’ve seriously impacted your performance it’s generally just not where most athlete wants to be even endurance athletes like Ironman runners and triathletes will be around 12% bf