sagging skin?

I'm 18 years old, 5 foot 4 inches and currently 172 pounds. my goal is around 130. I usually run/ walk 5 miles a day and the weight is coming off quickly. I decided I needed to workout when I saw the scale go up to 188 about a month ago. I still have about 40 pounds to loose and I was wondering if I would have loose/sagging skin when I loose more weight. I'm young so my skin is pretty firm but I would still like to know. Thanks.

Replies