I knew a girl who was basically a natural Kick-ass. Her nerve endings were born incomplete so she could break bones and not tell or never be hot or cold. Turns out, that's not a good thing and is very dangerous, but it does overlap with autism where sometimes we don't recognize our body's cues as intuitively (or more intuitively since ours is a spectrum, depending on the person) so sometimes we have these "super powers" of never feeling hot or cold, but when your 6yo is at field day in central Texas and passes out because she was too busy having fun to realize she needed to drink water until it was too late, it can also be a bad thing. That and we use the hot water REALLY fast. XD