We spend about one-third of our life either sleeping or attempting to do so.
Michael J
MJ
Aminoff
François
F
Boller
Dick F
DF
Swaab
D000818:Animals; D001364:Awareness / Q000502:physiology*; D006801:Humans; D012890:Sleep / Q000502:physiology*; D012893:Sleep Wake Disorders; D014851:Wakefulness