Biological rhythms refer to the natural cycles or patterns that occur within living organisms. These rhythms are driven by internal biological clocks and are influenced by various factors such as light, temperature, and hormones. Examples of biological rhythms include the sleep-wake cycle, circadian rhythms, seasonal rhythms, and reproductive cycles. Research in this area explores how these rhythms are generated, regulated, and synchronized, as well as their impact on various physiological processes and behaviors. Studying biological rhythms can provide insights into health, disease, and the functioning of organisms in their natural environments.