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A complete absence of sleep over a long period is not frequent in humans (unless they have fatal insomnia or specific issues caused by surgery); it appears that brief microsleeps cannot be avoided. [12] Long-term total sleep deprivation has caused death in lab animals. [13]
Lack of sleep has a significant impact on cognitive and physical performance, especially in endurance sports. Long-term sleep deprivation was shown to affect neurobehavioral function, including hallucinations and reduced reaction times, in a study of ultramarathon runners.
Sleeping badly shown to age middle-aged brain by nearly three years and linked to poorer brain health years later
Experts say recommendations tend to focus on amounts of sleep rather than maintaining regularity
A new study suggests that talking at a certain speed could be a sign of early dementia. Experts explain to 'WH' how you can “retrain” your brain as you age.
People may wish to take naps during the day, but unintentionally getting too much sleep will affect nighttime sleep. Physical activity is a treatment for Alzheimer's and a way to encourage night sleep. [5] Caffeine is a (fast-working) brain stimulant, but should be limited at night if a night's sleep is needed. [4] [5] [10]