In most of the cases women of soft constitution are liable to be barren. Indian women do not have the benefit of outdoor exercises except when they go round on annual tours of pilgrimage. So some sort of exercise is of absolute necessity for them to shake off their barrenness. Generally women belonging to the working classes have many children born to them whereas those belonging to the richer classes are barren and if at all they bring forth issues, they are few and not enough strong as compared to the children of the working classes. The wise preceptors of the rich people in bygone days wanted to give the rich ladies some sort of exercise coupled with a mental attitude favourable for child-bearing. Religious belief was pressed into service.