Girls, I am 180Ibs, I want to be 100 or 110Ibs, what can I do to accomplish my goals?

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I also notice that as I gained weight I keep feeling gassy and had the flatulence problem when gas goes out the butt without me farting.
Girls, I am 180Ibs, I want to be 100 or 110Ibs, what can I do to accomplish my goals?
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