Post Date: 4/27/10 6:32 am Please ask the trainers to put you in contact with people about your age who want to lose about what you want to lose who have not had excess skin due to exercise. My bet, based on personal experience trying that, is that they cannot.
The previous posters were correct - it's so individual based on your age, genetics, and history, that it's a real gamble to know if you'll have excess skin or not.
I'm 54, yo-yo'd from age 30 until 54, and spend a lot of time on our boat, so much tanning even with SPF 50 every hour and a half. I too have skin like a shar pei, but so much of it that literally, if I pick up my panni, I can fit in size 4 pants - and currently I wear an 8. It's all empty, so shapewear helps a lot to keep me from looking like a walking jello bowl.
Eventually, I'll do plastics at least on the tummy area just because there's too much excess to do anything else. DH says there will also be breast reconstruction, but so far good bras are dealing with that.
You will find out what your body has in store for you when it shows you - in the mean time, take care of your skin and do exercise because it's good for you, even if it doesn't fix the skin entirely.
Rebecca