In a cut a lot of people assuming eating a tonne of protein will help prevent muscle loss. But in actual fact it has been shown that by meeting a sufficient minimum in protein, excess calories being covered by carbs would actually be more protein sparing than extra protein.
If you feel like crap once you cut down carbs you most likely have either low/normal insulin secretion or good insulin sensitivity. Neither are mutually exclusive.
But if you where making out a macro plan, there would be next to no real life difference between. An equal energy diet with different nutrient composition assuming essential nutrients are met during a 24hr period.
Yeah you see my point in that way. But you can also look at it financially, what does 1000kcal of protein cost compared to say 1000kcal of say cereal? Which also tastes better, which can be a small psychological break from strict dieting. IMO carbs are given a very bad reputation, I was afraid to eat them for so long thinking they where the cause of weight gain until I started reading the likes of Lyle McDonalds work and Alan Aragon's. They are the two top nutritionist in the world from my point of view.
-EDIT-
Exactly. I cover my essential nutrients and use carbs a the filler of my energy.
Some days I've over my carbs, some days I'm over my fats or protein. At the end of the day I try to stick to my given energy intake.
But yes, I would keep my protein and fat a constant and adjust carbs. But When cutting I could reduce fat below that which I bulk on to take more carbs.
<message edited by Liddy on 28 January 2012 23:48>