system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why does eating expired meat make you sick even if you cook it well enough to kill all the germs?
gpt
Certain bacteria produce spores when they're within certain temperature ranges. Like when you cook meat and let it sit out at room temp for a while. This is when those spores go wild. When you reheat the food the bacteria is killed but the spores are resistant to cooking temperatures and will survive, eventually making you sick. In other instances you can have bacteria that grow and produce toxins. When you reheat the food, the bacteria toxins are not destroyed and can cause food poisoning.