Sleeping more than nine hours can sometimes be a sign of an underlying health problem, though extra sleep can be appropriate when sick or recovering from sleep debt.

Authors

• Person: Not available Organization: Sleep Foundation
  How Much Sleep Do You Need? - Sleep Foundation

Sources

• How Much Sleep Do You Need? - Sleep Foundation www.sleepfoundation.org Sleep Foundation via serper

Referenced by nodes (2)

• sleep duration concept
• sleep debt concept