Re: A thought on regenerations (spoilers for "Night/Day of the Doctor"
There's no definite answer. Like everything else in Doctor Who, regenerations mostly exist for the sake of telling entertaining stories, not to speculate about the biology of actual aliens.Since I've never seen nuWho, maybe there's something obvious that I've missed in the meantime, but I have to ask. Even if more energy was pumped into a Time Lord body, surely there would one day come a time when that body simply couldn't handle the stresses of more regeneration? I always used to think THAT was the reason Time Lords could only regenerate 12 times - meaning, that's all their bodies could handle.
Or to put it another way: You can't stay awake forever by just drinking loads of coffee - sooner or later you'll have to sleep. Wouldn't regeneration be something similar? OUR bodies can't handle staying awake 24/7 - the stresses would kill us. Same thing here, I would think.