To keep healthy body, we should consume at least 2 litres or 8 glass of water a day. And for smokers should consump more than that. Those water needed to replace ion comes out from body, such as urine, perspiration, breathing and secretion. Body will decrease temperature if water are deficiency. US Cardiologist, Dr. James M. Rippe giving advice for us to drink at least a litre of water more than what is needed our thirst. Because, loss fluids only 4 percents would result decrease in human performance for 22 percents. And If we lose 7 percents, our body begin to feel weak and lethargic. As much as activities we do everyday, there are more water drained from our body. Therefore, proffesionals remind us to drink more and not only for our thirst. If you were in Air Conditioned room, you should drink more due to the temperature will make your body more quickly dehydrated.
