I need to take at least two naps a day after getting 8 hours of sleep a night. What's wrong?

Possibly sleep apnea. Sounds like you're not getting a good night's sleep. Have there been events in your life that have disturbed your normal routine: stress, death, illness, etc? One other possibility is that you may be suffering from sleep apnea where for some reason your airflow is being cut off & you're waking up periodically throughout the night, which would interfere with getting a good night's rest. Check w/ md.