One infidelity website claims that having an extramarital affair can actually be good for your health.

UndercoverLovers.com, a UK dating site for married people, conducted a survey of 3,000 of its philandering members to ask them how much weight, if any, they had lost since they began having an affair. Of the 1,500 female respondents, 62 percent reported some weight loss, dropping an average of 10 lbs. Of the 1,500 male respondents, 53 percent reported some weight loss, dropping an average of 6 lbs.

"It’s well known that we eat more, and less healthily, when we’re unhappy," the site's spokesperson, Emily Pope, said in a press release. "Many UndercoverLovers.com members have endured years, and in some cases decades, of marital unhappiness before embarking on their affair. The instant joy and boost to self-esteem that many experience by having a new lover and the desire to look their best for them, can provide the perfect incentive to lose weight."

Pope also attributed the weight loss to the added calorie burn of sex and other physically intimate activities.

But not all are buying the survey's findings. According to psychologist and HuffPost Divorce blogger, Dr. Jeff Gardere, the loss is likely tied to something very unhealthy -- stress.

"No matter how much fun you may be having during these one night stands and adulterous affairs, the stress that is caused by sneaking around and not getting caught, and lying to your spouse is tremendous," he wrote in an email to Huffington Post Divorce. "Feeling guilt after the sex act and the affair also brings on additional stress too. So yes, you are losing weight during your illicit physical/sexual activity and even losing additional weight from the aforementioned stress, but this stress is also placing you at risk for all sorts of physiological illnesses."

And even if you did lose weight due to an affair, keeping off the pounds would prove challenging -- according to nutritionist and HuffPost Divorce blogger Barbara Mendez.

"The dopamine rush of an affair is like the rush you get when you fall in love which in turn supresses appetite," Mendez said via e-mail. "So you eat less and that added to the calories burned would indeed help you lose weight. But it is short lived. As soon as the affair goes sour, the weight will likely come back."

As marriage educator and HuffPost Divorce blogger Cathy Meyer pointed out, there are other, less touchy ways to lose weight.

"Is the possible loss of 6-10 pounds a good reason to engage in erroneous or immoral behavior? Is it worth the short-term boost to one's self-esteem?," she said in an e-mail. "Their study should be taken with a grain of salt. Or, if it is weight you are wanting to lose, a bed of lettuce and some cottage cheese but most definitely not a lover on the side."

What do you make of the survey's findings? Click through the slideshow below to test your knowledge of other cheating studies, then sound off on the findings in the comments.

Loading Slideshow...
  • QUESTION: According to an online study, women with what color hair are more likely to cheat?

    <strong>a) Black b) Blonde c) Red d) Brown </strong>

  • ANSWER: Blondes

    Apparently, blondes really do have more fun. According to a recent online survey conducted by Cheaterville.com, a support website for those who've been cheated on,<a href="http://www.cheaterville.com/?page=press&id=299"> a whopping 42 percent of users said female cheaters</a> had blonde hair, while 23 percent cited red hair, 20 percent cited brown and 11 percent cited black. For men, it's brunette spouses you have to worry about. According to the site, <a href="http://www.cheaterville.com/?page=press&id=299">40 percent of male cheaters</a> had brown hair.

  • QUESTION: According to a 2011 study, men are more likely to interrogate their partners about the sexual nature of an affair, while women question this:

    <strong>a) How long the affair lasted b) If the other man or woman was someone they knew c) If the cheater was in love with the other man or woman d) If the cheater initiated the affair </strong>

  • ANSWER: If the cheater was in love with the other man or woman

    According to evolutionary psychologist Barry Kuhle's 2011 study, men who've been cheated on are more likely to grill their partners about the sex itself, while <a href="http://www.huffingtonpost.com/2011/09/15/cheating-study-men-sex-women-love_n_963872.html">women were more likely to ask whether their partner was in love </a>with his mistress. So how did Kuhle and his team go about collecting the observational data for the study? They watched the television show "Cheaters" to <a href="http://www.huffingtonpost.com/2011/09/15/cheating-study-men-sex-women-love_n_963872.html">observe how partners in 75 different affair confrontations</a> reacted.

  • QUESTION: Men who hold this occupation are most likely to cheat, according to a 2012 online survey.

    <strong>a) Lawyers b) Teachers c) IT engineers d) Doctors </strong>

  • ANSWER: IT/Engineer

    What's the typical profile of a cheating husband? In 2012, AshleyMadison.com -- a dating site for married people looking to have affairs -- surveyed 11,453 fathers with accounts on the site and found that <a href="http://www.huffingtonpost.com/2012/06/11/cheating-husband-ashley-madison_n_1582387.html">the largest percentage of would-be cheaters work in the IT/Engineering field</a>. Those in the <a href="http://www.huffingtonpost.com/2012/06/11/cheating-husband-ashley-madison_n_1582387.html">financial industry (8.2 percent) and education (6.5 percent)</a> came in second and third, respectively.

  • According to recent studies, what percentage of women have had affairs?

    <strong>a) 30-35 percent b) 15-20 percent c) 5-10 percent d) 2-5 percent </strong>

  • ANSWER: 15-20 percent

    Fifteen to 20 percent of women have had affairs, <a href="http://blogs.psychcentral.com/sex/2012/01/men-and-women-more-alike-than-different-in-relationship-fidelity/">according to studies from Indiana University and Manchester Metropolitan University</a>, while a comparative 20-25 percent of men have cheated on their partners.

  • According to an online survey, mothers who cheat had been married for an average of this many years:

    <strong>a) One year b) Five years or less c) 16 years or more d) 25 years or more </strong>

  • ANSWER: Five years or less

    In May 2012, infidelity-based matchmaking site Ashleymadison.com polled 2,865 of their married female members and found that the typical cheating married woman was <a href="http://www.businessinsider.com/typical-cheating-mom-ashley-madison-2012-5?comments=all#comment-4fad4fa86bb3f71c7a000015">married for five years or less, in her 30s, and had a daughter under three years old</a>.

  • A recent online survey showed that 66 percent of Americans believe that people cheat on their spouses while...

    <strong>a) At the office b) In Las Vegas c) At work conferences and trade shows c) At bachelor and bachelorette parties </strong>

  • ANSWER: Work Conferences And Trade Shows

    Yep, a surprising <a href="http://www.huffingtonpost.com/2012/08/20/cheating-at-work_n_1812041.html">66 percent of Americans believe that people cheat on their spouses at work conferences and trade shows</a>, according to an August 2012 online survey conducted on behalf of ON24, a webcasting and virtual events company.

  • QUESTION: Infidelity-based matchmaking site AshleyMadison.com has recently seen an influx of married women signing up for its services on the day after this holiday.

    <strong>a) Valentine's Day b) New Year's c) Mother's Day d) Christmas </strong>

  • Answer: Mother's Day

    For the past four years, AshleyMadison.com<a href="http://www.huffingtonpost.com/2012/04/26/mothers-day-2012_n_1450803.html"> claims to have seen a rush of married women signing up</a> for its services the day after Mother's Day. In fact, according to the site's founder, Noel Biderman, more married women sign up for the site on that <a href="http://www.huffingtonpost.com/2012/04/26/mothers-day-2012_n_1450803.html">day than on any other day of the year</a>. Why? Biderman said he thinks the women feel especially under-appreciated on Mother's Day. "If that day comes to pass, and once again what [women] experience is a lack of appreciation, affection and respect, that is when the idea of taking on a potential lover takes full form," he said.

Keep in touch! Check out HuffPost Divorce on Facebook and Twitter.