@Hiphopopotamus It's hardly hysteria. This is the official advice on food safety from the BBC:
Reheating
When it comes to eating up your leftovers, how you handle them is key to staying healthy. What to do:
Use up your fridge leftovers within two days.
If you’re taking leftovers from the freezer, eat within 24 hours. Make sure they’re thoroughly defrosted before heating, by leaving them in the fridge or using a microwave.
Reheat food until piping hot throughout. If you’re using a microwave, be aware they do not heat evenly throughout, so take your food out halfway through cooking time and give it a stir.
Don’t reheat leftovers more than once. If you have a big pot of soup, for example, it’s better to take out what you need and reheat it in a smaller pan. Equally, don’t refreeze leftovers. The reason the NHS recommend this is because the more times you cool and reheat food, the higher the risk of food poisoning. Bacteria can multiply when cooled too slowly or reheated insufficiently.
Foods should be heated until they reach and maintain 70C or above for 2 minutes.
Foods to be careful of
Some foods, for example those high in protein, may be more prone to causing food poisoning, but the simple rule is that all leftovers need to be cooled quickly, stored properly and eaten within the recommended amount of time. Having said that, rice is particularly tricky as it can contain a type of bacteria that's resistant to heat. The longer cooked rice is left at room temperature, the more likely it is that the rice will become unsafe to eat. Ideally only cook as much as you need but if you find you have leftovers, cool within one hour and store in the fridge. Eat within 24 hours and if you're reheating it, make sure it's steaming hot throughout before serving.
www.bbcgoodfood.com/howto/guide/how-reheat-leftovers
The OP has blatantly ignored loads of these. She got lucky this time but that doesn't mean it's in any way a good idea to do this, or that other people should do the same.