Previous methodologies delivered almost pure quantitative techniques to do the modeling, which have made it difficult to do agile design process for specific-purposed products requiring a unique approach for each situation. This article aims to propose physiological concept modeling by combining process and functional modeling with qualitative interpretation. A physiological modeling incorporates derivation to transform an idea into a design concept with almost no quantitative postulates. It offers seven required steps to do a physiological modeling. The derivation may bring a flexibility for dynamic or continuous system by introducing cyclical & dynamic relationships between processes, including interventions from outside environment and function of residue to accommodate imposed residues.
