Tags: # Headcanon, # I guess?, # I dunno where to put it., # But this is pree neat, # Can you hear it? The Neverending Queue?,
The Doctor talks a lot about having two hearts, but nothing I’ve read has ever expanded on all of the biological implications of that. So, being a bio nut and a Whovian, I took on the challenge. Which turned out to mean trying to hammer canon into some sort of scientific sense, and taking liberal advantage of Rassilon literally designing Gallifreyans, otherwise this would never work.
Warning: Lots and lots of science below the break. LOTS.