Cooking at home is one of the best things you can do for your health. No matter what you make, home-cooked meals tend to be better for you — lower in sodium and saturated fat and more sensibly portioned — than restaurant food or takeout. If you lean into more healthful recipes, that’s even better. But it’s not only the food itself that’s beneficial, as Nicki Sizemore explains in her cookbook “Mind, Body, Spirit, Food.” The process of cooking itself can be nourishing, too.