A biological clock is an internal mechanism that regulates the timing of various physiological processes and behaviors in living organisms. Often synchronized with environmental cues such as light and temperature, the biological clock governs circadian rhythms, which dictate sleep-wake cycles, feeding patterns, hormone release, and seasonal reproduction. These daily rhythms are crucial for maintaining homeostasis and ensuring that biological functions occur at optimal times. Disruption of the biological clock can lead to various health issues, emphasizing its importance for overall well-being.