For today’s Dear Mark, I answer three questions from readers. First, I give some advice to a reader with a knack for doing a week or two strict Primal and then falling promptly off the wagon into a pile of donuts. How can she make it stick – or should she? Next, I extoll the merits of freezing your freshly homegrown produce rather than rely on under-ripe fruits and vegetables from half a world away. Finally, I discuss what to do when you feel your performance in the gym diminishing.