Despite his stony appearance, Musk’s stomach had been wrenched during the launch, almost to the point of throwing up. Even after the success, he had trouble feeling joy. “My cortisol levels, my stress hormones, the adrenaline, they were just so high that it was hard for me to feel happy,” he says. “There was a sense of relief, like being spared from death, but no joy. I was way too stressed for that.”
