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The morningness–eveningness questionnaire (MEQ) is a self-assessment questionnaire developed by researchers James A. Horne and Olov Östberg in 1976. Its main purpose is to measure whether a person's circadian rhythm (biological clock) produces peak alertness in the morning, in the evening, or in between.
The bunker experiment was a scientific experiment that began in 1966 to test whether humans, like other species, have an intrinsic circadian clock. [1] It was started by Jürgen Aschoff and Rütger Wever of the Max Planck Institute for Behavioral Physiology and later taken over by Jürgen Zulley.
Circadian rhythms are regulated by a circadian clock whose primary function is to rhythmically co-ordinate biological processes so they occur at the correct time to maximize the fitness of an individual. Circadian rhythms have been widely observed in animals, plants, fungi and cyanobacteria and there is evidence that they evolved independently ...
This Chronotype Questionnaire is important because it delves into the social aspects of circadian rhythms. By testing behavior rather than directly testing genetic factors, the MCTQ may offer new information regarding how the influences of external factors (like geographic location or seasons) or things such as obesity or social jetlag, may ...
Poor sleep and circadian disruption carry numerous costs for teens. Studies point to lower grades and higher rates of car accidents, athletic injuries, risky behaviors, substance abuse, obesity ...
In a 2019 study Shawn D. Youngstedt et al., showed that in humans "Exercise elicits circadian phase‐shifting effects, but additional information is needed. Significant phase–response curves were established for aMT6(melatonin derivative) onset and acrophase with large phase delays from 7:00 pm to 10:00 pm and large phase advances at both 7: ...
The theory suggests it might interfere with circadian sleep-wake rhythms. However, standard nightlights and true dim lights marketed for this purpose are perfectly safe to use."
Ruiz is the co-lead author of a new study recently published in the journal Nature Medicine that reports following an “early” time-restricted intermittent fasting pattern — where a person ...