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A second wind may come more readily at certain points of the circadian (24hr) biological clock than others.. Second wind (or third wind, fourth wind, etc.), a colloquial name for the scientific term wake maintenance zone, is a sleep phenomenon in which a person, after a prolonged period of staying awake, temporarily ceases to feel drowsy, often making it difficult to fall asleep when exhausted.
Many of the complications come from prolonged standing (more than 60% of a work day) that is repeated several times a week. Many jobs require prolonged standing, such as "retail staff, baristas, bartenders, assembly line workers, security staff, engineers, catering staff, library assistants, hair stylists and laboratory technicians". [ 1 ]
Modern humans often find themselves desynchronized from their internal circadian clock, due to the requirements of work (especially night shifts), long-distance travel, and the influence of universal indoor lighting. [33] Even if they have sleep debt, or feel sleepy, people can have difficulty staying asleep at the peak of their circadian cycle.
The researchers hypothesize cold, dry weather in the winter, low levels of sunlight, and even “sociocultural cycles, including cultural holidays, norms, and employment patterns” affect mood in ...
You might want to keep an eye on the forecast.
During extreme cold events, you may hear a loud boom and feel like you have experienced an earthquake. However, this event was more likely a cryoseism, also known as an ice quake or a frost quake ...
Within 24 hours [1] Types: Acute mountain sickness, high-altitude pulmonary edema, high-altitude cerebral edema, chronic mountain sickness [2] Causes: Low amounts of oxygen at high elevation [1] [2] Risk factors: Prior episode, high degree of activity, rapid increase in elevation [2] Diagnostic method: Based on symptoms [2] Differential diagnosis
Waking up earlier in the morning increases the response. [11]Shift work: nurses working on morning shifts with very early awakening (between 4:00–5:30 a.m.) had a greater and prolonged cortisol awakening response than those on the late day shift (between 6:00–9:00 a.m.) or the night shift (between 11:00 a.m.–2:00 p.m.). [12]