I bet you didn't like the replies above. It could be that all you think is: whatever, I wanna lose 30 lb anyway. If that's the case, before you go off and go on the next crash diet, look at this:
- 100 lbs isn't the magic number. A girl in my class weighs that little and is of that height and everyone is constantly talking about how bad she looks. Can't imagine that's what you want for yourself. You want ppl to say: "Woah, you look great, how did you pull that off?" right?
- Actually The number on the scale means little. Hell it means nothing. You can be 200 lbs and look fat, but you can also be 200 lbs and look ripped. It's all about bodyfat and muscle. For example, there are 2 girls of same height and weight: 5'7 and 130 lbs. The first has a bf of 23% and the other one has a bf of 15%. The one with the lower bodyfat percentage will have a more defined phisique and will look slimmer and leaner than the girl with the higher percentage, though their height and weight is exactly the same.
You see, looking good isn't about scale weight. The scale is a mere tool to check if you are losing weight. But it won't tell you how much of that is fat. You can have the same height and weight as Jessica Alba (for example) but don't look as trim. You can weigh as little as a supermodel and end up looking like a skeleton with no muscle definition, instead of the sexy and slim look they have.
- Healthy eating (=also eating enough!) and a good workout routine will get you the body you want. Crash dieting and dropping 30 lbs won't. You will end up losing more muscle than fat and feel like crap along with it.
If now, you have finally come to your senses and decided what you really want; try to rephrase your question, read around and we'll help you on your way for a healthy good looking body.