Physiological differences refer to variations or distinctions in the physical and biological characteristics or functions of different states or processes within an organism.
Related terms
Circadian Rhythms: The internal biological clock that regulates various physiological processes over a 24-hour cycle.
Homeostasis: The body's ability to maintain stable internal conditions despite external changes.
Electroencephalogram (EEG): A test that measures electrical activity in the brain and is commonly used to study sleep patterns and stages.