I don't see a problem with eating only raw veggies on the WD just as long as one gets all the proper nutrients and calories.
Heck,I used to eat ONLY a 12 oz.Bloody rare steak and some eggs a night after fasting and working in a garage for 10-12 hours a night a few summers ago lol.Worked out great for me and I became lean ans shiet.
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I don't really think you have to literally gorge yourself but eat enough and you'll be fine.