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well for me it was Gatorade X"D

enjoyment also matters, atleast that's what i think. so if you won't enjoy vegan food than you will stop eating it and will come back to meat and it might become difficult for you to control calories...

well it also depends on personal preference as well

umm vegan food is perfect n all but it lacks iron so you would have to take that from some specific vegan food or just take supplements for that.. otherwise its a good plan

well if you burn all of your calories on that day i don't think that would be an issue