Water helps the liver function well. Since the liver metabolizes fat, once it starts working smoothly it will perform its functions in getting rid of fats, which helps achieve a slender body.Problems in digestion trigger the body to retain the products that food has left in the body. If this is the case, there will be an increase in body weight. Water comes to the rescue, though. It aids to soothe peristaltic problems. A glass of lukewarm water will help relax the muscles, thus increasing its capacity to expel waste products. Problems in passing out stool can also be greatly aided by water. It hydrates the intestinal walls, thus providing a faster rate of expulsion.If you want to achieve a body with definition, water is also a great aid. Actually losing the weight is never as fulfilling as seeing its effects on your body. With proper hydration, you will get to see the effects of your weight loss in the fine definition of your muscles.You may not often regard it as important, but water is vital to maintaining the body that you have been dreaming of. Besides, losing weight does not only stand to make you look good, but also to be healthier and fit.