I sort of eyeballed it, honestly. During the first couple weeks, I got so paranoid about veggies... but really... it's just lettuce. And it's only like .3 carbs/cup for it. I stayed between 15-20 carbs/day... and some days I'd have 3-6 cups of lettuce... and sometimes a little cucumber in there... a pickle here or there... or steamed broccoli with dinner. I don't think you can hurt yourself with veggies, but keep in mind that your best friend is something like bacon or beef. If you're gonna splurge and have a cup of broccoli with dinner, put butter all over it and you better get cheese on that burger. Remember to keep your fat ratio up up up!!