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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.
"Caffeine has a half-life of three to five hours, so if you have coffee too late in the day, you might still have some caffeine in your bloodstream around bedtime,” she says. ... Most experts ...
“Setting five alarms might feel like you ... of perimenopausal women ages 40 to 59 sleep less than seven hours per night, ... which is your body’s 24-hour clock,” says Kogan. Once you do ...
Sleep inertia is a physiological state of impaired cognitive and sensory-motor performance that is present immediately after awakening. It persists during the transition of sleep to wakefulness, where an individual will experience feelings of drowsiness, disorientation and a decline in motor dexterity.
Naps: students taking a nap of one to two hours in the early evening hours (between 6:45–8:30 p.m.) had no cortisol awakening response, suggesting cortisol awakening response only occurs after night sleep. [12] Waking up in the light: cortisol awakening response is larger when people wake up in light rather than darkness. [14] [15]
Credit - Getty Images (2) W aking up in a pool of sweat can feel alarming. And even though lots of people sweat more overnight, it’s a sign that things may not be working as they should: the ...
Polyphasic sleep is the practice of sleeping during multiple periods over the course of 24 hours, in contrast to monophasic sleep, which is one period of sleep within 24 hours. Biphasic (or diphasic , bifurcated , or bimodal ) sleep refers to two periods, while polyphasic usually means more than two. [ 1 ]
When you’re feeling healthy and up to moving your body even if you’re groggy after a bad night, “you can integrate exercise.” Plan ahead . On a Sunday, try to block off time in your week ...