Bizarre Bodily Behaviors Explained

The video explores common phenomena related to light and temperature. It explains why red eyes appear in flash photos due to the proximity of the flash to the lens and the dilation of pupils in darkness. It also covers why some people sneeze when exposed to sunlight, attributing it to a short circuit between the optic and trigeminal nerves. Lastly, it debunks the myth of swimming after eating being dangerous, explaining that thermal shock from sudden cold water immersion is the real risk.

What new insight or understanding did you gain from this video?