I'm not on the Schwarzbein Principle, but on the "Banting Diet."
I'm not overweight either, and I'm 18 and I'm 5'2". I eat very similarly to the SP, but I eat a high fat, moderate protein, low carbohydrate diet, and I've noticed that I went from weighing around 112 lbs. to gaining weight to be 119 or 120 lbs. This is from about six months ago to now. So in six months I've gained 8 lbs. mostly muscle but also subcutaneous (under the skin) fat all over my body and after I eat, there is more fat on my hips and thighs. I wear a size 8 pants and I feel like my thighs and butt used to look really good because I ran and ate a low calorie diet before, but now I have developed a bubble butt and there's cellulite there too. I emailed the author of the book
Eat Fat, Get Thin! (Barry Groves Ph.D.) and he told me it is natural for a woman to have more fat on her hips and thighs as well as cellulite and that a woman loses this fat when she breastfeeds. I'm not exactly hoping to rush out and get pregnant so I can breastfeed, but I would like to think he is right and that I could lose my hip and thigh fat permanently when I eventually have a baby and breastfeed.
I'm kind of worried, but my mom is more worried about me gaining weight than I am, which makes me self-conscious around her. I advised her to do eat the same as me (high fat, low carb, moderate protein) and gradually cut out the sugar and stop the medications, but she hasn't. She more or less probably sees me gaining weight and thinks thats the wrong approach: I have to eat less to lose weight, which is what she is trying to do by the way.
I'm into this site by Barry Groves Ph.D.:
http://www.second-opinions.co.uk/index.html
He wrote the health/dieting book that got me hooked on a high fat/low carb/mod protein diet, and has since renamed it to
Natural Health and Weight Loss.