Fit is the new skinny, and there has been a market explosion in protein shakes and other whey products. However, for the over-40 body, you will have to settle for natural proteins if you want to bulk up. Many of these store-bought products are wrought with artificial additives, flavorings, added sugars, hydrogenated oils and other preservatives. That is not to mention all the extra calories packed in each serving.

You will bulk up, but definitely not in the muscular sense of the word. There are many proteins-rich foods you can incorporate into your diet, and you won’t have to spend hundreds of dollars on expensive shakes. Skinless chicken is among the most protein-rich food you can eat. However, if you are a vegetarian, you also have options in the form of chickpeas or beans.