You can’t do certain exercises to lose weight in certain areas, it just gets taken off all around.So anything that burns energy in general – walking, cardio, swimming, dancing, sports liketennis & soccer, gymnasticspilates and yoga are great, also you can lift weights (don’t worry it won’t make you bulky, trustme, that’s very hard to do on PURPOSE, much less on accident)lifting weights will have the additional benefit of toning up your muscles underneath the skin,which helps to reduce “flab” like you want.
At 17 and 145 though, I wouldn’t worry too muchabout your skin – it should contract very easily to accommodate the new size.Since you like to walk, that is an awesome way to get good exercise that’s easy on your bodyand will burn fat.
My suggestions:
(1) pick something you enjoy. If you don’t, you won’t stick to it. Walking seems good for yousince you said you like it.
(2) nutrition, nutrition! Remember that your body NEEDS certain things, don’t let it down withcrazy restrictions or anything. But also don’t eat too many sugary foods. If you eat proper mealswith vegetables, fruit, etc., your body SHOULD get all the nutrients it needs, and therefore youwon’t have cravings for junk food as much. Bottom line: eat healthy, and this does NOT meanstarve yourself!
(3) you won’t see results immediately! Keep at it! And why don’t you make this a longer goal?Walking isn’t just good for losing weight, you’ll be much more energetic and feel better if youkeep it up.
(4) IMPORTANT!! Get a friend to do this with you, if at all possible – it helps SO MUCH to havesomeone with you, because you can keep each other motivated. Also makes those long walksmore enjoyable!Good luck, and please. Check a BMI (body mass index) calculator, or better yet a doctor, so youcan find a good weight for yourself. 100 is only healthy if you’re short and have a small frame.It’s very very light, and I doubt it’s healthy for you personally.