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Circadian Rhythms have a cycle of

  • 25 Hours.
  • 24 Hours.
  • 23 Hours.

Explanation from PART66Online

Left to run free without daylight and other time cues, the body's internal clock settles to a natural period of about 25 hours, which is why the rhythm has to be reset daily to the 24-hour day. The 24-hour figure is the entrained cycle, not the free-running circadian period taught here.

S

Sangareddy Patil asked · 9 Jan 2018

the answer should be 24 hours

Community Comments (7)

A
audrelis88 5 Sep 2018
how i know its around 24.1h so maybe in its reason to be 25 :D

T
Thomas Bangalter 5 Dec 2018
I agree.
G
Greg 26 Jan 2020
agreed
J
Jordi 16 Oct 2020
it is wrong on multiple sites aswell and they dont bother changing it.
J
Jordi 16 Oct 2020
it is wrong on multiple sites aswell and they dont bother changing it.
J
Jordi 16 Oct 2020
man its wrong it is 24
D
Duse 30 Jun 2022
If an individual is isolated from these Zeitgebers, without clocks, set meal times, or any way of detecting light
changes, the circadian rhythms will “free run” to a periodicity of about 25 hours

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