If your doctor has been unable to diagnose your sleep disorder based on your sleep schedule and habits or if the treatments that you’ve already tried haven’t been effective, then you may be a good candidate for a sleep study. If you notice any of the following sleep problems, talk to your doctor about whether a sleep clinic may be right for you: Chronic snoring, extreme sleepiness during the day (even after a full night’s rest), trouble falling asleep at night on a regular basis, or frequent awakenings during the night.