The quality or state of being characterized by biorhythms; the tendency of biological systems to operate in cycles.
From biorhythmic + -ity (abstract noun suffix from Latin -itas), creating a noun form. This technical term developed in chronobiology research during the late 20th century.
Scientists have discovered that your cells' biorhythmicity is so important that disrupting it—like working night shifts—can actually shorten your lifespan by making you more prone to disease!
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