What is non-sleep deep rest? (NSDR)

Non-Sleep Deep Rest (NSDR) is a term coined by Andrew Huberman to describe protocols that involve a deliberate shift towards deeper relaxation without actually sleeping. These protocols include practices such as meditation, yoga nidra, and hypnosis, which are designed to improve brain and body function through enhanced relaxation and focus. NSDR can accelerate learning and memory retention, aid in recovery from sleep loss, and assist in achieving calmness and reduced anxiety 1 2 3.