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What is the longest you havent slept?

The longest recorded time without sleep is approximately 264 hours, or just over 11 consecutive days. Although it's unclear exactly how long humans can survive without sleep, it isn't long before the effects of sleep deprivation start to show. After only three or four nights without sleep, you can start to hallucinate.

healthline.com - How Long Can You Go Without Sleep? Function, Hallucination, More

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What is the most a human can go without sleep?

approximately 264 hours The longest recorded time without sleep is approximately 264 hours, or just over 11 consecutive days. Although it's unclear...

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How long can you go? The longest recorded time without sleep is approximately 264 hours, or just over 11 consecutive days. Although it’s unclear exactly how long humans can survive without sleep, it isn’t long before the effects of sleep deprivation start to show. After only three or four nights without sleep, you can start to hallucinate. Prolonged sleep deprivation can lead to: cognitive impairments

irritability

delusions

paranoia

psychosis Although dying from sleep deprivation is extremely rare, it can happen. Read on to find out how staying awake for a full 24 hours or more can affect your body, and how much sleep you actually need to function. What to expect after 24 hours without sleep Missing 24 hours of sleep isn’t uncommon. You might miss a night of sleep to work, cram for a test, or take care of a sick child. While it might be unpleasant to stay up all night, it won’t have a significant impact on your overall health. Still, missing a night of sleep does affect you. Studies have compared 24-hour wakefulness to having a blood alcohol concentration of 0.10 percent. This is above the legal limit to drive in most states. Some effects of going 24 hours without sleep include: drowsiness

irritability

impaired decision-making

impaired judgement

altered perception

memory deficits

vision and hearing impairments

decreased hand-eye coordination

increased muscle tension

tremors

increased risk of accidents or near misses Symptoms of 24-hour sleep deprivation usually go away once you’ve had some shut-eye. What to expect after 36 hours without sleep Staying awake for just 36 hours can have intense effects on your body. Your sleep-wake cycle helps regulate the release of certain hormones, including cortisol, insulin, and human growth hormone. As a result, going without sleep for an extended period of time can alter several bodily functions. This includes your: appetite

metabolism

temperature

mood

stress level Some effects of going 36 hours without sleep include: extreme fatigue

hormonal imbalances

decreased motivation

risky decisions

inflexible reasoning

decreased attention

speech impairments, such as poor word choice and intonation

What to expect after 48 hours without sleep After two nights of missed sleep, most people have difficulty staying awake. They might experience periods of light sleep that can last up to 30 seconds. During these “microsleeps,” the brain is in a sleeplike state. Microsleeps happen involuntarily. After a microsleep, you might feel confused or disoriented. Staying awake for 48 hours also disrupts the immune system. Inflammatory markers, which help your body prevent and target illnesses, start to circulate at increased levels. Some research has shown that natural killer (NK) cell activity decreases with sleep deprivation. NK cells respond to immediate threats to your health, such as viruses or bacteria. What to expect after 72 hours without sleep After 72 hours without sleep, most people experience an overwhelming urge to sleep. Many are unable to stay awake on their own. Going three days without sleep profoundly limits the ability to think, especially executive functions such as multitasking, remembering details, and paying attention. This level of sleep deprivation can make it difficult to see even simple tasks through to completion. Emotions are also affected. People who have undergone this level of sleep deprivation may be easily irritated. They may experience a depressed mood, anxiety, or paranoia. Research has also found that sleep deprivation makes it more difficult to process others’ emotions. In one study, participants with 30 hours of sleep deprivation had difficulty recognizing angry and happy facial expressions. Finally, several days of sleep deprivation can significantly alter perception. You might experience hallucinations, which occur when you see something that isn’t there. Illusions are also common. Illusions are a misinterpretation of something that’s real. An example is seeing a sign and thinking it’s a person.

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Can food and water intake have any effect on this? Sleep deprivation can change both your appetite and the types of foods you crave. Studies suggest that sleep deprivation is associated with both an increased appetite and an increased desire for foods associated with weight gain. However, consuming empty calories can ultimately leave you more tired. Eating well may offset some of the effects of sleep deprivation, but only to an extent. Since your body is conserving energy, opt for lean, protein-rich foods, such as nuts and nut butters, cottage cheese, or tofu. Avoid fatty proteins, such as steak or cheese. These will make you sleepier. Dehydration can exacerbate the effects of sleep deprivation — such as grogginess and difficulty concentrating — so it’s also important to drink plenty of water. How much sleep do you really need? The amount of sleep you need per night varies according to your age . In general, newborns and infants need more sleep, and adults need less sleep. The CDC have daily sleep recommendations based on age group: Age Daily sleep recommendations newborns 14-17 hours infants 12-16 hours toddlers 11-14 hours preschool-age children 10-13 hours school-age children 9-12 hours teens 8-10 hours adults 7-9 hours Gender may also play a role in how much sleep you need. Studies have found that women tend to sleep slightly longer than men, although the reasons for this are unclear. Sleep quality is also important. If you’re concerned about how much sleep you’re getting, make an appointment with your doctor.

healthline.com - How Long Can You Go Without Sleep? Function, Hallucination, More

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