What and how to drink during a workout, or… 16:00 10/27/2014 … the meaning of correct hydration, ensuring vitamins and minerals input and supplementation in sports. Not what you were looking for? Search for other text. When working out, we lose fluids not only through sweat, but also through vapor. When trainings are especially long and intensive, loss of fluids is also intense and can lead to dehydration. Dehydration can lead to weakness and lowering of physical capabilities. Water is the source of nutrients, a cleansing element in cells. The human body is composed of about 60 – 65 % water, a human can survive only a few days without water, that ’ s how important it is. About 75 % of energy utilized by our bodies is used to keep their heat levels. When muscle work is done, heat is produced. The body temperature raises. In order to prevent overheating, the heat needs to be dispersed to keep the temperature at safe levels of 37 – 38 °C. Great raises in temperature can lead to heat