The women leaning back in large loungechairs are enclosed from the chest down by a plastic balloon. To the casual observer, they look like a cross between customers at a beauty parlor and weight watchers at a reducing salon.
But the gleaming new London quarters in which they are paying customers is neither. The women are pregnant patients preparing for relatively painless childbirth. The key to their goal is contained in equipment they are using and the title of the building in Knightsbridge where they gather at least once a week:
the Decompression Clinic.
Opened this month, the clinic employs a technique...