system
Given the following post, respond as if you're commenting on Reddit:
human
[General] I'm a fat guy who recently started working out. I've lost about 20 pounds and was hoping to lose another 80 or so. Last night I was turned into a vampire. Am I stuck this way forever?

I've done a lot of reading but I don't see any fat guys in vampire lore. What are the macros for blood? Is it even worth it to keep working out? What are my options? Help, the clothing sizes in this leather fetish catalog only go up to XXL.
gpt
Depends on the vampire. 

Strigoi, traditional Slavic Vampires, always become thin and almost skeletal.

Strain Vampires become the same. 

Blade vampires seem to have normal metabolic functions, and can get fat if they consume too much or are too sedentary. This indicates they can also lose weight. 

Anne Rice vampires remain as they are when turned, so you'd be screwed. 

Dracula is unclear. It seems that a Vampires health and vigor changes as they feed, so you may be able to lose weight if you abstain from eating... But vampires also manifest unearthly beautiful appearances when well fed, so you may automatically get leaner and more muscular. 

Warhammer Vampires... Well... There's a horrible, predatory bat-monster living under your skin. Fat is the least of your worries..