Improve Your Sleep by Understanding Your Biological Sleeping Pattern
13 Mar 2023 · 2 min

1:54
Dr. Bruce explains chronotypes, genetic sleep patterns mapped to four animals: lions wake early, bears follow the sun, wolves are night owls, and dolphins have fragmented sleep. Your chronotype is set by DNA, but timing meals, exercise, caffeine, and light can shift your sleep by one to two hours and boost energy.
Questions this video answers
Chronotype is genetic and cannot be changed; small shifts of one to two hours are possible by adjusting behaviors.
Lion (described as early bird; typically has first kill before dawn).
Bear (wakes with sunrise and sleeps with sunset).
Wolf (nocturnal; hunts at night).
Dolphin (sleeps unihemispherically; half the brain sleeps while the other half stays alert).










