What if I lose about 50lb in 3 months (5 days fasting, 5 days not fasting but walking and this over the whole 3 months), as an 18 year old (no smoking, no drinking, not having sun damage, only a little bit of stretch marks), weighing (before the weight loss) 155lb. I just want to know if your skin will tighten after the weight loss. Online people tell you that you shouldn't lose weight rapidly because you will get loose skin. But does it actually matter? Does your skin tighten even if you already got some loose skin? Or does it jus stop? I really need to know this, but can't find the information online. A little bit of loose skin doesn't matter too me, I just don't want it to be noticeable. And after it what if I gain weight, will the fat just fill in the loose skin like?