Biotin is a water-soluble vitamin that may have a positive effect in the appearance of skin, hair and nails. What is biotin in? What are the properties of biotin?
Iron supports the proper production of red blood cells and hemoglobin, and also supports the proper transport of oxygen in the body. Where is the most iron?
Calcium is a macroelement, which is one of the most important minerals found in the human body. What is calcium in? What are the properties of calcium?
Caffeine is a natural psychostimulating substance, which is most often supplied to the human body along with coffee. How does caffeine affect the body?
Swimming is a physical activity practised in water, which is a great form of relaxation, and can also positively affect the physical and mental health of a person.