The goal of the warm-up is to increase nutrient flow and heat of the muscles through increased blood flow throughout the body. Stretching is not advised as a warm-up strategy because of the damage that is easily caused to cold muscles.
Experts rank water second only to oxygen as essential for life.
In addition to offering true refreshment for the thirsty, water plays a vital role in all bodily processes. It supplies the medium in which various chemical changes of the body occur, aiding in digestion, absorption, circulation and lubrication of body joints. For example, as a major component of blood, water helps deliver nutrients to body cells and removes waste to the kidneys for excretion. Most of the water-soluble vitamins are components of essential enzyme systems. Many are involved in the reactions supporting energy metabolism.