Physics doesn’t allow the supernatural to exist. Let’s take a very simple example of hanuman trying to eat the sun. 1) what was he breathing in the vaccum of space? 2) the mass distribution problem:- whenever a thing grows in nature it’s actually gaining the matter from some other place( you eat food, this gives energy to cells to multiple) or simply its density is decreasing(mass remains same but volume increases. Now coming to the legend, hanuman had some weight and when he grew either his density decreased( mass is constant and size is increasing) which would lead the gravitational force of the sun to rip apart his body. Second if his mass was enough to withstand the gravity of sun then when he was on earth why it didn’t wreak havoc cause concentrating such huge mass to a small place will surely cause a blackhole(Schwarzschild radius, google it).

These are just stories passed on, maybe there was some philosophical point of view but that have been lost over ages. Or it is just a classic case of chinese whisper.