Why, when dieting or using other means to loose weight, is it beneficial to drink large amounts of water?

If you drink more water, it flushes your system. Water purifies your system and cells, and increased water=increased cell respiration/cell production. Just increasing your water intake gives you better skin, healthier organs, and keeps you feeling good. Your cells will be able to better absorb nutrients and reject the junk if you have more water in your system.