hard to believe you were in ketosis with three flour tortillas and 1/2 cup cooked brown rice. Plus, what do you mean by a "few hundred calories" worth of vegetables? That sounds like at least 200, which would be 50 grams of carbs before even including the other stuff.
Normally, feeling like crap on a low-carb diet means you aren't eating enough calories. However, judging by your carb intake, you were. So hopefully the problem isn't that you decided to eat a lowfat, lowcarb diet which completely defeats the purpose.
The other thing is that ketoadaptation does take a few days. Your body adjusts fairly rapidly to using fat as its main source of energy but there is an initial period that can make you cranky and maybe even feel tired.
If a day is all you're willing to try, it's not likely that you'll stick with it anyway. So no, you don't need to go into ketosis to get most of the benefits of a low-carb diet. However, if you're adding mashed potatoes and corn bread to the tortillas and brown rice, you're about as far away from a low-carb diet as you can get.
|