INS and type 1 diabetes mellitus: What’s more, athletes—with and without diabetes—have the same nutritional requirements of normal people, according to the principles of the Mediterranean diet: 45–65% carbohydrate (CHO), 20–35% fat, and 10–35% protein, albeit that for T1DM athletes total energy requirements, macro, and micronutrients distribution should be individualized based on body weight, insulin therapy, glycaemic control, and specific EXE and athletic goals [26].