I've heard that when doing stomach crunches, it's good to do them every other day to give your stomach muscles a chance to heal and strengthen. Then you can do a different exercise on the days inbetween and mix it up so it's not boring. We bought one of those stomach cruncher things that has a pad for your head and you hang on to the bar above your head with your arms upstretched. I think it cost about 30.00 and it really works well and keeps your back from hurting.
I'm a huge water drinker. I don't drink pop, mostly because the bubbles upset my stomach but I also don't really drink juice (though I probably should!). I have the odd orange juice now and then and of course my morning coffee but the rest of the day it's water. I bring a glass jar of it to work with me as well.
There are some good high protein snacks out there that can leave you feeling full without too many calories. I like to make humous and I leave the tahini out of it and it tastes exactly the same to me. I just throw a can of chick peas in a blender with some lemon juice, a dash of water, some garlic and cayenne and some olive oil. I eat it with one warmed tortilla ripped in pieces.
Refried beans also have less than a gram of fat. (I think!?!) I love beans.
And lately, we've been eating alot of Cobb salads for dinner with shredded turkey and boiled egg and sliced almonds and cranberries and some lowfat cheddar cheese with a lowfat dressing. It's sooooooooooooooo good!