Waist–hip ratio
The waist-hip ratio or waist-to-hip ratio (WHR) is the dimensionless ratio of the circumference of the waist to that of the hips.
This is calculated as waist measurement divided by hip measurement (W ÷ H). For example, a person with a 30″ () waist and 38″ () hips has a waist-hip ratio of about 0.78.
Android fat distribution
In females, measures of Waist to Hip ratio have been observed as an evolutionary sign of attractiveness and reproductive success. A females waist being smaller than her hips by a ratio of 0.7 is considered most attractive as it indicated readiness to give birth to offspring, and overall health to ensure survival of offspring. Waist to hip ratio is determined by an individual's proportions of android fat and gynoid fat. A small waist to hip ratio indicates less android fat, high waist to hip ratio's indicate high levels of android fat.