Exercise and stomach stretching

[Min 2]

Two questions. How important is exercise and why? Might seem obvious but before sleeving I exercised a fair bit and it made no difference to my weight whatsoever. so why is it so critical now? Also, how much does your stomach stretch? It wouldn't be great to ultimately end up where you were. In any event how could that happen when most of your stomach has gone anyway? Can someone help with answers to these obvious questions?

[mirrim58 33]

As far as exercise goes, I've heard it helps with saggy skin. Also as you can build muscle it improves your metabolism, helping you burn more calories at rest.