They have a healthy dose of calories, carbohydrates and even some amount of proteins. The minerals found in raisins comprise iron, potassium, magnesium, copper, zinc, phosphorous and calcium. A healthy dose of Vitamin B along with small quantities of folate, Vitamin C and Vitamin K also come included in the package. Being as nutrient-dense as they are, a handful of raisins can drastically up your energy quotient owing to the number of calories they contain. Also since a small quantity does the trick, it will not burden your belly down as in the case of heavy snacks.