I fast for 23 hours, with a 1 hour eating window. Depending on how long it takes to prepare dinner, my dinner is usually around 5:30 PM, and then I don't eat until dinner the next day. I drink water, tea, and coffee throughout the day. And I am losing weight every week (1-3lbs). I walk 2+ miles per day, and body weight 1-2x per week (depending on my schedule).
If you are curious about fasting and the a very good way to starting it, I suggest reading up on PKlopp's posts (Intermittent Fasting - A Primer (Part 1,2,3). He goes into scientific reasoning of why fasting might be good for you.
I'm not saying fasting is for everyone (DFH!)... If you feel you are not "leptin resistant" and want to tweak you fat loss effort, go ahead and read Pklopp's postings.