Microwaves sure won’t do you any good.
Even small doses of microwave energy might do long-term damage, and larger doses can cause a dangerous buildup of heat, especially in body parts like eyes, which don’t cool quickly.
Having said that, though, it’s also true that people stationed at microwave towers used to stand in front of the microwave generators to warm up.
In fact, it was after a chocolate bar suddenly melted in the jacket pocket of one of them that the idea came to try using microwaves for cooking.