Sleep is essential for healthy skin. During sleep, the skin repairs and regenerates itself, and lack of sleep can lead to dull, tired-looking skin. Aim for at least 7-8 hours of sleep each night to keep your skin looking its best. Stress can also have a negative impact on the skin. Stress can cause inflammation, uneven skin tone breakouts, and premature aging. Practicing stress-reducing techniques such as meditation, yoga, or deep breathing can help improve the overall health of your skin.