It includes stimulating the cognitive functions of small children and seeking -to the extent possible- to preserve the capabilities and decision-making faculties of frail elderly persons and persons with disabilities. Maintenance requires generating and managing goods, resources, services and activities in order to meet the care receiver’s needs in a sustainable manner, that is, by providing food, ensuring health and personal hygiene and stimulating cognitive and social learning. Within the family, roles and responsibilities, spaces and cycles overlap, the time, intensity and effort involved are not easy to quantify (Duran, 2003 and 2012, Sojo, 2011).