I need to get in shape if I'm going to become a vampire. If my body doesn't change at all from when I turned, that's a pretty good deal..
You're thinking of zombies.
As a Vampire, the Blood will rejuvenate your body as it changes you.
I think he meant, get less fat.. because you don't wanna "be fat" forever.
The Blood will transform the fat as it changes you. No need to worry about being fat forever.
Are you sure... I've never seen it depicted where the Turning also makes you "less-fat"...
hahahaha.
The Embrace is partly a mystical process, not explainable by commonly held scientific beliefs.
As is eternal life, and the ability to sustain oneself by imbibing only the blood of others, and no other food or drink in any form.
As part of that process the Blood transforms you to the ideal physical form of yourself, or at least as close as it can get. Hence it is important to have a haircut that you can tolerate for millennia, and to ensure your nails and beard are trimmed appropriately before the Embrace. Purely as a matter of convenience going forward.