yikes - 8 days?!

OMAD carnivore will cut you pretty quickly. You'll lose some fat and probably a bunch of water, and you'll come out of it in better health than you went in. Can be easy or tough depending on how different it is from how you usually eat.

Fasting is great but 8 days is very long if you're not in the habit of it and/or if you're not fat-adapted already.