Slender MILFS Victoria Beckham and Heidi Klum have found a way to stay trim for their equally famous husbands without ever leaving the bedroom. Posh and Heidi recently plopped down $200 bucks for a sampling of one of Hollywood’s best kept secrets, the Ionithermie Body Shape Weight Loss Treatment.

Ionithermie is a non-surgical spa treatment that claims to drain the body of toxins and excess fluids using clay and electric stimulation.

“People think it is some kind of gimmick, but it’s slowly becoming known among A-listers,” Rick Tiland of Dragonfly Spas says in a published report. “It isn’t really advertised, so it’s basically only known in that small circle of celebrities. They prefer to keep it that way.”