severe precontest diet and metabolism

[skinnyfat]

I heard that some bodybuilders go as low as 1000 cals/day in the last days before their contest (well, before the carb-up). Isn't this supposed to wreck your metabolism? Does the metabolism ever go back, or is it permanently screwed?

 

[diamonddiceclay]

pro bb'ers are always switching from in season to off season and the calories and type of food they eat changes alot between those times-of course, when you are on a ton of steroids,growth hormone,insulin... you can get away with more than the avg person