Week 2 of the 21 Day Challenge

I am happy to report that I had a loss this week. I am at 184, which is down 4 pounds from last week. Yeah. I have been trying to walk as many days as I can for my exercise. The weather plays a huge role in that especially as I live in Wisconsin. Yesterday it was 75 degrees out with some wind, just beautiful. Last night we had thunderstorms that produced some tornadoes about 1 1/2 hours from us but made it so the biggest loser wasn't on because they cut in for the tornado info so I only got to watch the first 10 minutes and the last 10. My boys were not happy. So hopefully they will replay it or we will have to look online for it. Now today it is only in the 60's but extremely windy. We did go on a walk this morning, about 2.5 miles. I also did some gardening.
My goals for the challenge have been to take a multivitamin everyday and I have since last Friday, drink at least 64 ounces of water and eat at least 3 veggies/fruits a day and I have been doing all three. The last goal was to exercise everyday. I have not gotten something in everyday but I since Friday I have gotten exercise in 5 days, so I only missed one.
I would like to retake my measurements as I feel like my clothes are looser in some areas but the scale doesn't always reflect that. So it has been a good week.
I really need to work on getting rid of my belly as that hasn't gone down a lot. Any suggestions as to what exercise works best for this? Just good ole crunchers? Thanks. Have a great week.