Any biological process which displays an endogenous, entrainable oscillation of approximately 24 hours.
7
votes
1answer
111 views
Why is maintaining a circadian rhythm important?
What are the real consequences of never maintaining a circadian rhythm?
How is circadian rhythm important for health and function? Where did it arise in evolution?
12
votes
2answers
1k views
Do men have significant hormonal cycles?
I know there's a similar question here. But that discussion dissolved into lunar cycle and a correlation with it. I want to find more towards the original question of is there a periodic hormone ...
10
votes
2answers
121 views
What can the timing of human urination tell about the human's physical condition and circadian rhythms?
I've noticed a peculiar phenomenon. A subject drinks 400 ml of water, then observes time until the urge to urinate is felt. The time is 15 minutes. The subject releases water. 14 minutes later another ...
8
votes
2answers
265 views
Is it possible to live without health problems sleeping one day and not the other?
Basically, I want to know if it would be humanely possible to sleep one day, skip the next, sleep, skip, sleep, skip, etc, with a 8 hour sleep time.
If you need any extra information, let me know.
6
votes
1answer
35 views
Is there a normal human melatonin concentration to light level curve?
I'm looking for a graph or a curve that would show the typical concentration of melatonin in blood or saliva for humans over 24 hours. It would be good to know the photoperiod for the same human as ...
3
votes
1answer
164 views
Human sleep cycles and dream times, what influences the timing and intensity? Sleep history included
I'm doing sleep and dreams research and have developed an iPhone application to help me track my bedtime, rise time, sleep onset and also mark dreams. The app also monitors overall activity overnight ...
