The Surprising Ways Sleep Affects Your Day

How is last night's late night affecting you today?

After a bad night’s sleep, just getting through the day can feel like wading through treacle. And it’s not surprising. According to research, poor sleep can affect almost every aspect of our day-to-day lives: from our morning commute and performance at work to our post-work gym session and even our prowess between the sheets.

And just a small shortfall in our daily sleep quota can have an impact.

“You might feel the most immediate effects of poor sleep in the general demise of your ability to function effectively throughout the day. You might find it hard to concentrate, feel cranky, over-emotional or stressed,” says Jade Wells, a physiologist at Nuffield Health.

“In our daily lives, we may experience [sleepiness] as a general fatigue, lack of motivation, or even the experience of nodding off. Over time, this can takes its toll on perception and judgment resulting in reduced efficiency and productivity, as well as an increased risk of making errors at work, and having accidents.”

Here are just a few of the ways last night’s late night could be sabotaging your day.

Driving Ability
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Most of us wouldn’t dream of getting behind the wheel when we’re over the legal alcohol limit. But driving when we’re sleep deprived can be just as dangerous in terms of our reaction times, according to researchers.

One study found that moderate sleep deprivation (staying awake for 17 to 19 hours) produces impairments in cognitive and motor performance equivalent to legally prescribed levels of alcohol intoxication.
Self-Esteem
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Ever wondered why sometimes you breeze through the day full of confidence and chutzpah, while others you feel useless and inadequate and just want to crawl back into bed?

Research suggests poor sleep could be a contributing factor. A study on the connection between sleep and self-esteem found that short sleep duration was related to lower optimism and self-esteem when compared to those sleeping seven to eight hours.
Brain Function
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Scientists have found new evidence that reveals how lack of sleep affects our memory and capacity to learn new information – which could explain why work tasks seem so much more challenging when we’re not sleeping well.

The study, led by Christoper Nissen at the University of Freiberg Medical Center last month [August 2016] shows for the first time that sleep resets the build-up of connectivity that takes place over the course of the day in the human brain – a process crucial for our grey matter to remember and learn.

It was found that loss of a single night’s sleep was enough to block the brain’s natural reset mechanism, causing neurons to become muddled with electrical activity and unable to lay down new memories.
Speech
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Sleep deprivation could have a similar affect to alcohol when it comes to your speech, too. So if you’ve got an important work presentation or job interview looming, you’d be well advised to get a good night’s sleep. According to researchers at Pennsylvania State University, a lack of sleep could affect the way you speak in a number of telling ways.

One study of students found that the longer participants stayed awake, the more likely they were to show dramatic changes in energy, speech patterns and pronunciation.
Cold Fighting Powers
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Feel like you’re constantly battling colds and viruses? Mum could be right about you needing an early night. A U.S. study published in the journal Sleep found those who slept six hours or less a night were four times more likely to catch a cold than those who slept for more than seven hours.

The researchers analysed 94 men and 70 women, of an average age of 30, by giving them a wrist-mounted sleep sensor to track the quantity and duration of their sleep each night for a week.
Gym Workout
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There is plenty of evidence to suggest physical exercise can help you get a better night’s sleep. But did you know that the relationship is mutually beneficial, and that sleep could also boost the results of your workout?

According to researchers, sleep could be key to seeing the best results from your CrossFit workout. One study found that sleep debt damages muscle physiology and impairs muscle recovery because of increased stimulation of protein degradation, which impairs protein synthesis and decreases muscle mass.
Sex Life
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‘Netflix and chill’ might be a euphemism for sex but too many late-night TV dramas and not enough sleep could ultimately be the death of your sex life. A 2011 study published in the Journal of American Medical Association (JAMA), found that after one week of sleep deprivation (less than 5 hours a night), young men had 15% less testosterone than normal (the equivalent testosterone loss to 10 to 15 years of aging) resulting in a reduced libido.

Meanwhile, a 2015 study by the University of Michigan Medical School looked at the sleep and sex patterns of 171 female college students for 14 days, concluding that every extra hour of sleep the women received made them 14% more likely to engage in sex.
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