I never stopped taking it when I was lifting, so im not sure if Id ever lost anything. I wouldnt really consider it just water. Dont listen to BS others tell you man, read up on it and come to your own conclusions.
Even protein is bad for you if you dont drink enough water. Gotta keep them kidneys well supplied with water. I wouldnt worry about it though. Im sure you've heard of the loading, and all that stuff.
I never concerned myself with it to be honest. 5 grams a day is more then plenty. I took it daily for extended periods of time (months, years) and never really had a problem with it. Check this out:
http://forum.bodybuilding.com/showthread.php?t=100831
That site is full of good info, word of warning though. Its swarming with morons, trolls, you name it. Its like this site, multiplied by 10 //content.invisioncic.com/y282845/emoticons/laugh.gif.48439b2acf2cfca21620f01e7f77d1e4.gif (more actually)
When it comes to weight lifting, I cant stress it enough to take it slow and gain slowly over time. Sure you'll see some ppl come it and blow up while training like an idiot. Guess what though, 99% those ppl end up injured and on the sidelines while you pass them by. Stick to form 100% , get all your warmups done. Stretch like hell when you're done. The longer you're in it, and the stronger you are, the easier it is to get injured. Paying attention to the smallest details pays off at that point.
I could dig up more links of you want them, I dont want to cause an info oveload though.