"To put it lightly," Gabriel agreed. "Back then inhabiting actual physical bodies was kind of a new concept. Relatively speaking. And the whole 'heat and physical exhaustion' thing just never happens when your presence alone heals the body you're in."

He paused, heaved his pack up onto his shoulders, and then glanced at the Doctor with an ironic smile. "And that's why I didn't know when the Hell to stop eating cake before I got sick. Hard to tell limits when they never used to be an issue."