Pauline Potter was pronounced the world's heaviest woman last fall. Says she's dropped 98 lbs because of marathon sex sessions with her ex-husband, Alex.

She weighed an astonishing 643 lbs at the time of her record.

According to Potter, her ex-husband couldn't resist her so much after she gained the weight initially. He would travel from Arizona to have sex with her. Once realizing the weight loss benefits, the two have continued the "sexercising" as Potter likes to call it.

Adding, "I can't move much in bed, but I burn 500 calories a session – it's great exercise just jiggling around."

Potter cosumes over 10,000 calories a day, but with the help of her ex-husband Alex, she hopes to drop her weight down to 538 lbs. The two currently have sex up to seven times a day.

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