Lunch with mushroom beef barley soup is designed to increase your testosterone, the most important hormone for a healthy libido. Beef is high in zinc, the ultimate sex mineral. Zinc blocks the enzyme that converts testosterone to estrogen. Certain mushrooms, like white button mushrooms, also block the conversion. Barley is a whole grain, which will keep you fuller longer, and less likely to snack or eat mindlessly later; the end result is feeling better about your body.