The bottom line is that you need to get at least 7-9 hours of good quality sleep every single day. If you are a typical adult.
Just like healthy diet and normal breathing, regularly getting great sleep is important for your physical and mental health.
Did you know that, regular poor sleep can put you at the risk of serious medical conditions, including obesity, heart disease and diabetes.
"It's now cleared that a solid night sleep is essential for a long and healthy life"
A great way to understand the difference between day and night sleep is to look at the negative health effects of sleeping during the day can have on shift workers.
Shift work has been linked to certain chronic diseases and illness. Long-term night shift work is associated with an increased risk of certain cancers as well as metabolic problems, heart disease, ulcers, gastrointestinal problems and obesity....shift work disorder can increase the risk of mental health problems like depression.
And what actually causes shift work sleep disorder?
Insomnia and wake-time sleepiness are related to misalignment between the timing of the non-standard wake-time schedule and the endogenous circadian propensity for sleep and wake. In addition to, circadian misalignment, attempted sleep at unusual times can be interupted by noise, social obligations and other factors. Finally, there is an inevitable degree of sleep deprivation associated with sudden transition in sleep schedule.
The basic idea here is that: staying awake for work during the night, actually goes against how we as human beings were designed to sleep during the night.
Many healthy and productive people goes to sleep at 11 PM, but most of them very likely don't get up until 6-8 AM.
What's crucial here is getting that 7-9 hours of high quality sleep most nights.