Abstract: An article of furniture, such as a bed or a chair, provides improved comfort by supporting a human body resting thereon and adaptively conforming to the body contours in contact with the support surface while providing a distribution of support forces that does not vary significantly as the contour changes. A segmented frame pivotally supported on pairs of balance levers which in turn are pivotally attached to a firm base provides a floating action. When ratios of distances of lever ends from their pivot points are selected in inverse ratio to the weights of the human body sections to be supported by attached frame segments, the resulting distribution of support forces matches the distribution of weight in the body and tends to relieve muscle tension.