physiological
adj.adj. relating to the physical and chemical processes of your body. It describes how your organs and systems work, not your thoughts or feelings.
adj. relating to the normal mechanical, physical, and biochemical functions of a living organism or its parts. Distinct from psychological, which concerns the mind.
Exercise causes physiological changes in your heart rate.
The doctor explained the physiological reasons for her fatigue rather than blaming stress.
The study distinguished between the physiological stress response, such as increased cortisol, and the psychological perception of pressure.
Either from physio- + -logical (equivalent to physiology + -ical) or Latin physiologicus + -al.
Typically used attributively before a noun (e.g. 'physiological process').