Lighting is usually not given much thought in everyday life, but it plays an important role in many aspects. For starters, according to scientists, light helps regulate the bodys circadian rhythm, the natural sleep/wake cycle. Insufficient or improper lighting has been shown to affect mood, mental alertness, and performance. It can also cause headaches and eyestrain. Furthermore, lighting has a direct effect on a rooms aesthetics. It can alter the mood and brighten a room or create a sense of warmth and intimacy. The use of natural light is also an important factor to consider when designing a space. Properly placed windows and skylights can add life and energy to a place. In commercial and residential spaces, lighting can be used to make a statement. Various fixtures, colors, and intensities can be used to set the desired tone and ambiance of the room. For example, in an office space, task lighting with an adjustable intensity and color temperature can be used to boost productivity. To sum up, lighting can play a vital role in how we view our living and working spaces. It has the power to transform a room and affect the way we feel and work. Proper lighting is an important factor to consider when creating or renovating a space.