During deep sleep (stage 3), breathing and heart rate slow down, and the body and brain relax, which facilitates physical rest, recovery, and the health of the immune system, bones, and other tissues.

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)

• deep sleep concept
• immune system concept