NSDR: Non-Sleep Deep Rest protocol, by Dr. Andrew Huberman

20 Minute Non-Sleep Deep Rest (NSDR) to Restore Mental & Physical Energy | Dr. Andrew Huberman - YouTube

10 Minute Non-Sleep Deep Rest (NSDR) to Restore Mental & Physical Energy | Dr. Andrew Huberman - YouTube

30 Minutes of This Feels Like 8 Hours of Sleep - Andrew Huberman - YouTube

Neuroscientist: 15 Tips to Fall Asleep Faster & Sleep Better - YouTube

Neuroscientist: 15 Tips to Fall Asleep Faster & Sleep Better - YouTube

10 Minutes of This Feels Like 8 Hours of Sleep (Andrew Huberman) - YouTube

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Yoga nidra - Wikipedia
yogic sleep in modern usage is a state of consciousness between waking and sleeping,
typically induced by a guided meditation.