Adapted from Japan, where Ganbanyoku is immensely popular in day spas, these soothing relaxation beds are made of a dense black stone mined near Kyushu, Japan that retains heat and radiates it upwards. You lie on the smooth stone, polished to a satiny finish, with your head on a bamboo pillow-shaped prop, and let the heat soak deep into your bones. Read full story

Author: melindaminton

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