ncbi.nlm.nih.gov

X0Kjj TIL your bones aren’t just rigid sticks holding you up—they’re alive, constantly reshaping to your habits. Lift weights, they thicken. Sit around, they thin. Wolff’s law proves your skeleton quietly adapts to every stress you put on it, like a biological blacksmith at work.
GA6Mg TIL heroin and opium were widely used by US servicemen in Vietnam war, partly to help them tolerate the challenges of the war environment. ~43% of US servicemen who served in Vietnam had used heroin/opium at least once and half of those are thought to be dependent on them at one point (1974 study).
ANVvo TIL taste buds are not confined to your tongue. Your soft palette, epiglottis, and even upper esophagus all have taste buds. Your gums even have limited function taste buds.