Thanks for your question. Hypersomnia is the medical term for sleeping too much. There are many varieties of this, so more information would be helpful here. However, I can say that common causes of difficulty waking in the morning include not getting enough sleep (7 to 8 hours a night for most people), obstructive sleep apnea (snoring is good evidence for this), or delayed sleep phase syndrome (falling asleep later and waking up late, which can be normal in a teenage population). Because there are so many potential causes of what you describe, I recommend visiting a primary care doctor or psychiatrist for further evaluation. I hope this helps. Dr. Sheppe