Cartilage between bones acts as a cushion and provide a smoother surface for joints to rub against. In oth â¦ er places it acts as a shaping structure. The tip of the nose and ears are composed almost entirely out of cartilage.
Story at-a-glance 1  -. Eating your boogers may help introduce pathogens from your environment to your immune system, helping it to learn and build defenses, according to a new theory in support of the hygiene hypothesis.
You already know that fish is good for you, that itâs packed with proteins, minerals, vitamins and amino-3 fatty acids, that scientific research suggests it enhances your cardiovascular health and makes you smarter, and that the American Heart Society recommends eating at least 2 servings of fish per week.