Sleep is very important for our health. When we sleep, our body and mind have time to rest and recover. People who sleep well usually feel happier and have more energy during the day. Experts say that adults need about 7 to 8 hours of sleep every night. Teenagers and children need even more. Without enough sleep, people can feel tired, stressed, or have problems focusing at school or work. In conclusion, sleep is not just rest — it is part of a healthy lifestyle. Taking care of our sleep means taking care of ourselves.