I gave up soda for lent, and since then, I've been drinking A LOT of water! I keep a 28 ounce sport bottle on my desk at work, and just fill it from the water cooler. I find myself drinking about 70 ounces a day or so.
I used to drink a jumbo fountain soda from Wawa every day, and now it grosses me out to think how much sugar and empty calories I consumed! Yuck!! Giving up the soda wasn't as hard as I thought it would be, so now I'm trying to make it a lifetime commitment, and not just for lent.