ritual (n.)
repeated, always consistent, regular procedure according to a fixed order, ones complete dedication and focus is necessary for the practice

All rites of passage or „transition“ are marked by three phases: separation, margin and aggregation. The characteristics of the ritual subject (the „passenger“) are ambiguous; he passes through a cultural realm that has few or none of the attributes of the past or coming state.

hygiene (n.)
conditions or practices conducive to maintaining health and preventing disease, especially through cleanliness