Tamils classified women in to seven categories according to their age:
starting from age 5 and finishing with 40.
Probably they called over forty women with a general term like “woman”. Sanskrit book Rati Rahasya went one step further and classified women into four categories on the basis of psycho-physical aspects:
Many books were written until 12th century giving more information about women’s body features. All these show serious research was done in these areas by Hindus.