Beans, beans, the magical fruit. The more you eat…the stronger your nails. They’ve got protein, zinc and biotin, which can help make your nails thicker and less prone to splitting. Beans are also thought to be an enhancer for your hair by combating biotin deficiencies. Most legumes are high in fiber, protein, zinc and antioxidants, which can boost collagen production and give your skin a healthy glow and elasticity. Not bad for something that comes in such a tiny package.