19/01/2017 12:03 AM AEDT | Updated 19/01/2017 1:58 AM AEDT

Gwyneth Paltrow Wants You To Put A Stone In Your Vagina

Michael Tran via Getty Images
Gwyneth Paltrow wants you to put an egg in your vagina

Forget vagina steaming — according to Gwyneth Paltrow, vagina eggs are the new must-try health fad, even though they've reportedly been around for centuries.

Called a "Jade Egg," the smooth, small stones are meant to be inserted into the vagina, giving its owner plenty of health benefits.

"Jade eggs can help cultivate sexual energy, increase orgasm, balance the cycle, stimulate key reflexology around vaginal walls, tighten and tone, prevent uterine prolapse, increase control of the whole perineum and bladder, develop and clear chi pathways in the body, intensify feminine energy, and invigorate our life force," says Goop’s “beauty guru/healer/inspiration/friend,” Shiva Rose, on Paltrow's lifestyle website.

These miracle eggs are already sold out on Goop, with a retail price of $66 USD ($55 USD for the rose quartz egg which is "ideal for people who’ve seen results with the Jade Egg and want to take their practice a step further.")

According to the website, "Yoni" eggs were a "strictly guarded secret of Chinese concubines and royalty in antiquity" and have the ability to "harness the power of energy work, crystal healing, and a Kegel-like physical practice," making them ideal for detox and cleansing.

And if you too are wondering whether the little egg can get stuck or lost up in your hooha, Rose answers that question in a helpful Q&A.

"No, it can’t get lost, but these ones have a hole drilled in them, which you can then thread with unwaxed floss, to make it easier to take out, and to generally ease any anxiety about it—which, I’ll tell you, a lot of people have!"

No kidding.

Fortunately, there are many ways to have pleasurable orgasms and tighten and tone your pelvic floor muscles without putting a rock in your vagina. If you want to increase your orgasms or make them better, look no further than your local sex toy shop, which will have plenty of options to help you get there. And the Mayo Clinic has expert advice on how to do kegel exercises to tighten up down there. (Bonus: it's free.)

But if you want to learn more about jade eggs, there are many websites offering information about the ancient practice, including how to select the right egg for you, care for your egg and how to use it.

Update: Since Gwyneth's vagina eggs have gone viral, doctors are speaking out against the practice.

Dr. Jen Gunter, a Canadian OB/GYN, wrote a blog post detailing why jade eggs are a "truly terrible idea."

"My issue begins with the very start of your post on jade eggs specifically that 'queens and concubines used them to stay in shape for emperors,'" wrote Gunter. "Nothing says female empowerment more than the only reason to do this is for your man! And then the claim that they can balance hormones is, quite simply, biologically impossible. Pelvic floor exercises can help with incontinence and even give stronger orgasms for some women, but they cannot change hormones. As for female energy? I’m a gynecologist and I don’t know what that is!? How does one test for it? Organically sourced, fair trade urine pH sticks coming soon to GOOP for $77 I presume?"

She continued, "As for the recommendation that women sleep with a jade egg in their vaginas I would like to point out that jade is porous which could allow bacteria to get inside and so the egg could act like a fomite. This is not good, in case you were wondering. It could be a risk factor for bacterial vaginosis or even the potentially deadly toxic shock syndrome."

Gunter also noted that pelvic floor muscles are "not meant to contract continuously," so she advises women not to wear the egg while walking. She also suggested women use weights made with medical grade silicone or plastic if they want a device to help with kegel exercises.

Read a first-hand account of what it's like going to a jade egg vagina weightlifting class.