So I have a character who is pyrokinetic. I already kinda have an answer to how his power actually works thanks to [this question](https://worldbuilding.stackexchange.com/questions/173513/how-can-i-expand-the-definition-and-some-specifics-of-pyrokinesis). Specifically the top answer

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> you could have the user have the ability to emit intense heat out of their skin
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So basically he "shoots" intense heat out of himself, igniting flammable objects or the air itself, giving the look of shooting flame.

But for this to work and not kill the person, he has to be immune to intense heat.

Is this possible in some way? Without a suit or any external sources?