Broccoli
Broccoli is beneficial when you eat it on a regular basis. It is rich in Vitamin C, and helps ease digestion. It even helps to boost your immune system, which will help your metabolism. A cup of broccoli provides nearly 135% of your daily nutritional need. Its rich vitamin content helps your blood flow and prevents specific congenital disabilities. You can either eat broccoli raw or cook it the way you want.
Cost: $1.64 per head.