Lifestyle factors: “A sedentary person who begins a smart exercise program, for example, is likely to need more sleep.".This is where adults need just four to six and a half hours of sleep per night to feel their best, and this trait runs in families,” Dr Potter says. Genetics: “There is a rare phenomenon called familial natural short sleep.“While some newborns need as many as 19 hours of sleep per day, some people who are 65 or older might only need five hours.” Age: “In general, sleep needs decrease across the lifespan,” he explains."If you play sport, need caffeine to get through the day, feel tired during the day, have a manual job or need to remain alert for your job, have higher stress levels, or suffer from a sleep problem, you'll likely need closer to eight hours sleep." But there are three other factors that can mean the best time to sleep and wake up is different for someone else, Dr Potter explains: Some people need more sleep than others because they have more active lifestyles, explains Margo. (Image credit: Getty Images) Why do some people need more sleep than others? “Some people are more resistant to some of the repercussions of sleep loss than others,” says Dr Potter. However, just as everyone needs a different amount of sleep, everyone reacts differently to a lack of sleep. When compared to people who regularly get a good amount of sleep, those with conditions that prevent them from sleeping are more likely to develop diseases like obesity, diabetes, and cardiovascular disease, as a study by Jichi Medical University School of Medicine outlines. ![]() While chronic insufficient sleep, like insomnia, increases the risk of many diseases.” Increased sleepiness from a lack of sleep also increases the risk of traffic accidents and accidents at work. "Even short-term, sleep loss impairs brain function, worsens mood, focus, memory, ability to learn, and increases impulsivity. “Insufficient sleep is the worst outcome as it affects most if not all aspects of human biology," he says. “The most important thing is that you get the correct amount of sleep,” confirms Margo, who is also the sleep expert for Dreams, the UK’s number one specialist bed retailer.ĭr Potter agrees. However, these findings are minimal compared to evidence on the health benefits of just getting enough sleep - whatever the hour. ![]() They were least common among people who fell asleep within this golden hour of 10 pm to 10:59 pm. After analyzing answers to various lifestyle questions and readings from a wrist accelerometer, they discovered disease occurrences were most common among those with sleep times past midnight. Researchers in affiliation with the University of Oxford looked at 88,000 participants between 43 and 74 years old over six years and found that just over 3000 of them developed heart and circulatory disease.
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