1. a recurring cycle in the physiological processes of living beings, such as the sleep-wake cycle
Usage: scientific
2. a hypothetical cycle that supposedly affects human behavior, emotions, and physical condition
Usage: pseudoscientific theory

Examples

• Scientists study biorhythms to understand how light affects sleep patterns.
• Her biorhythm was disrupted after the long flight across time zones.
• The researcher examined the biorhythms of nocturnal animals.
• Many people believe their biorhythms influence their daily energy levels.
• The app claims to track your biorhythm and predict good days for activities.
• Shift workers often struggle with disrupted biorhythms.
• The study focused on circadian biorhythms in elderly patients.