In general, foods are made up of carbohydrates, proteins, and fats, each of which provide a different number of calories: 1  Carbohydrates provide 4 calories per gram. 2  Proteins provide 4 calories per gram. 3  Fats provide 9 calories per gram.
IMPORTANCE OF WATER. Water is our lifeline that bathes us and feeds us. In ancient cultures water represented the very essence of life. The Romans were the first to pipe water into their growing cities, especially with their aqueducts.
Why drinking water is important. More than two thirds of the human body consists of water. We require water for almost every function within our bodies, from flushing out toxins to digestion. But knowing how much water to drink can be a challenge, particularly when itâs warm or youâre doing more exercise than usual. Drink too little and itâs possible to suffer some potentially serious health problems. However, to complicate matters, drinking too much also carries health risks.