Before the sleep study, you should follow your normal daily routine as much as possible. Avoid caffeine or alcohol on the day of the test, and bring any medications or devices you normally use for sleep. You will be asked to arrive at the sleep lab in the evening, where sensors will be attached to monitor brain activity, heart rate, breathing, and oxygen levels while you sleep. The study is safe and non-invasive, and the lab environment is designed to be comfortable and relaxing. Most tests are conducted overnight and results are reviewed the following day.