When you hear citrus fruits- what comes to mind are? Oranges, grapefruits, limes, tangerines, and lemons. These fruits are an excellent source of vitamin C that greatly boosts the immune system, other outstanding health benefits of these fruits includes; good source of soluble fibers, which is known to lower cholesterol and regulate the levels of glucose in the body. Citrus fruits contain flavonoids renowned for their health benefits to the heart, they also help to reduce the severity of cold, which explains why so many people reach for it during flu and cold season. We recommended top 5 best manual citrus juicer.