The amount of energy it takes to heat the hydrogen is tens of millions of degrees. In these reactions, you get two hundred million times more energy out per fuel in then, say, burning a hydrocarbon. So that means my entire life, like mine, etireut, my house, my whole thing. And that's exactly why the stars are still here. Like if the stars were burning coal, like we do to day, like the stars would have burnt out. But because of do infusion, they're billions of years old.