Light exposure significantly impacts mental well-being, primarily through its effect on circadian rhythms and mood regulation. Exposure to natural light during the day helps regulate the sleep-wake cycle, enhancing sleep quality and reducing feelings of depression. Sunlight stimulates serotonin production, a neurotransmitter that contributes to feelings of happiness and well-being. Moreover, inadequate light exposure, particularly in winter months, can lead to conditions like seasonal affective disorder (SAD). Prioritizing outdoor time and using daylight-simulating bulbs can help mitigate these effects, thus promoting better mental health.