It's all about calories, dummy.
But to be sustainable it's about the macronutrient composition (as you put it) of those calories.
You need to keep calories low but get enough fats and protein with a residual for carbs from those calories. However, althletes might focus on getting enough carbs and residual the rest.
I focus on protein, omega 3 fats and getting some residual carbs from my calories. But I do find carbs useful to fuel exercise. So I eat oats for breakfast. Yum.
Last edited by IanG : 04-12-2014 at 09:05 PM.