Zytek XL The important matter to seek in nutrient is for those ingredients that can maintain your blood flow. The matters incorporated in such foods include vasodilatives and they work by loosening up the involuntary muscle making up the walls of blood vessels. Some good examples of these foods are salmon tuna fish and eggs and veggies like broccoli and carrots. There are other foods that helps your blood flow also. With a little research you will be able to find out what they are.