In historical psychological theories, the asthenic type was contrasted with the (muscular) and pyknic (rotund) types.
The (also known as the leptosome or leptosomic type ) refers to a specific physical constitution characterized by a slender, fragile, and elongated build. This classification is most prominently associated with Ernst Kretschmer , a 20th-century German psychiatrist who theorized that physical build is linked to personality and mental health. Physical Characteristics asthenic type
: Generally falls significantly below the average for the individual's height. Psychological & Clinical Associations In historical psychological theories, the asthenic type was