Pauline Potter lost 98 pounds from having marathon sex, she claims.

The 47-year-old California resident became reportedly the heaviest woman in the world when she weighed 643 pounds, according to the Huffington Post, and she wants to lose weight by having marathon sex sessions.

During an interview with the UK's Closer magazine, Potter stated that rekindling her sex life with her ex-husband Alex, 46, helped her lose a portion of the 98 pounds.

I can't move much in bed, but I burn 500 calories a session -- it's great exercise just jiggling around, Potter told Closer.

Potter used to eat 10,000 calories a day, but since she's cut back on her calories and added sex to her diet routine, she is hoping to reach her goal of 532 with some help from Alex. They have sex up to seven times day, she tells the Huffington Post.

I miss[ed] our sex life, Alex said to The Sun.

But it's not all business. The couple has fun too. Potter made sure to point out that she also pleases Alex.

We love foreplay and massages and, as well as full sex. I pleasure Alex, too, she overshared to the magazine. My bed is strengthened and, although I can't buy sexy lingerie, I drape a nice sheet over me.

The couple met online in 2002 and married three years later. They broke up three years later, since Potter couldn't get along with Alex's son, she said.

Potter reacted to the split by eating large amounts of high-calorie foods. She then became even more depressed from the extra weight she had gained, so she called the Guinness Book of World Records in hopes that the shame of having the title of World's Heaviest Woman would spur her to lose weight.

She was right, kind of.

Alex visited his ex after hearing about the Guinness feat, and they instantly reignited their romantic spark.

Within the first day of being back together we had sex six times in 24 hours, Alex told The Sun. Even though one of Pauline's legs weighs more than I do, we're able to position her body to make sex enjoyable for both of us.

Alex weighs 140 pounds and does most of the work in the bedroom, the Huffington Post said.

It's really dangerous for us to have sex because at any moment the bed could collapse and one or both of us could be seriously injured or even killed from the impact, he explained to The Sun.

Though sex is an alternative weight loss technique, it's not an unheard of method.

Shagging can make you slimmer, if you do enough of it, Dr. Yvonne Kristin Fulbright, a sex educator, relationship expert, columnist and founder of Sexuality Source Inc., wrote for Fox News in 2008. It can also help the two of you fall for each other all over again. Requiring no monthly fee - dress code optional - you can 'sexercise' yourself into shape. This is one gym membership you'll never want to drop.

Fullbright also wrote that sexercise can also improve blood flow, strengthen the heart, better cholesterol, enhance sleep, extend energy, improve muscle tone and decrease stress, the Huffington Post noted.

In addition to her multiple sexercise routines a day, Potter has also cut back on her calories, but she still enjoys eating a Big Mac occasionally, the Huffington Post said.

It was the biggest mistake of my life letting Pauline go, and it's taken her gaining weight and becoming the world's heaviest woman to realize how much I still love her, Alex told the Sun.