On a daily basis, the human body loses water, even when you're not purposely working up a sweat. The amount, of course, varies depending on your activity levels and climatic conditions. The body is however tuned to tell you whether you need to replenish your water reservoir. The easiest way to judge if your body needs water is how thirsty you are. In simple sense, water is essential simply because of its liquid consistency. Water, with its remarkable dissolving properties, is the perfect medium for transmitting substances, such as phosphates or calcium ions, into and out of cells within the body.
Your breath, skin, and muscles may be telling you that your body is running low on water. Moreover, your body depends on water to survive. Every cell, tissue, and organ in your body needs water to work correctly. For example, your body uses water to maintain its temperature, remove waste, and lubricate joints. In short - Water is needed for good health.
There is no replacement for water. Drinking sodas or coffee can exacerbate dehydration. Worse yet, sodas, processed fruit juices, and other sweetened beverages are primary sources of fructose, which will only deteriorate your health and worsen the situation. However, by the time your thirst mechanism kicks in, you may already be a bit dehydrated. Most studies show that about 2 in 3 people are dehydrated and need to drink more water.
Indicators that You Need More Water:
It is necessary to understand the subtle signals that your body sends, indicating you need to drink more water. These include:
1) Hunger even though you've recently eaten
2) Joint aches
3) Dull, dry skin and/or definite wrinkles
4) Exhaustion and/or mood swings