I have 2 very lean kids (5 and nearly 3) that eat primal. I make sure to offer plenty of fruit and we have potatoes, rice, or non-GMO corn based pasta 5 of 7 days each week for dinner. Every couple weeks I'll make pancakes for breakfast. I also make sure to never limit how much they're eating. I'm often amazed at how much my 5yo daughter can eat in one sitting. I'm hoping she'll hit 40lbs at her appointment for her 5yo check-up this week.