Mark's Daily Apple
My general rule is that starchy vegetables like tubers and potatoes, as well as sweet fruits, are elective foods. You don’t need ‘em, and most people, especially those who are trying to lose weight, will be better off limiting them. They can be tasty, though, and if your activity levels warrant a higher intake of carbs, you could eat them. I have no problem with that and I don’t see them as problematic in that situation. In fact, if you’re doing daily Crossfit WODs or pounding the pavement to the tune of 100+ miles each week, you had better eat some tubers and some fruit. If you don’t, if you go very low carb while trying to maintain that breakneck pace, you will suffer. You will probably also crave easily-digestible, refined, processed junk carbs. Think chips, bread, pizza, pasta, or – my own personal favorite/nemesis from my Chronic Cardio days – tubs of ice cream.
Your body needs to replenish the glycogen, and it needs carbohydrates to do it. Gluconeogenesis can only get you so far if you’re pushing your body to its limits. In the face of heavy, glycogen-depleting training, a lack of Primal starch sources will have you craving sweets and grains in no time.