The body's circadian rhythm influences appetite by regulating hormones that dictate hunger and satiety. Hormones such as leptin (which signals fullness) and ghrelin (which stimulates hunger) are affected by the sleep-wake cycle. Disruption to the circadian rhythm, caused by inconsistent sleep patterns, can lead to increased cravings and irregular eating habits. Additionally, circadian cues can affect metabolism and energy levels throughout the day, impacting food choices. Understanding these rhythms allows individuals to optimize meal timing and enhance overall nutritional strategies for improved health and fitness outcomes.