Carbohydrates are the most natural and healthy fuel for the human metabolism ever. You simply have to take your pick among the varieties of legumes and whole grains that are on offer where you shop. Please do not follow a diet that tells you to avoid them it is nonsense and that been proven to be useless over and over again by countless medical studies.
Carbs are a real healthy option when you choose the right ones. They have been the staple of human sustenance for thousands of years and should rightfully remain so.
Just watch it! You will get some insight into how whole diet industry is fooling us into eating diet devoid of carbs...and what not? Video is little long (about 2 hrs), and I doubt you will listen to it to end of it!