{"id":222306775,"date":"2023-07-31T18:31:16","date_gmt":"2023-07-31T16:31:16","guid":{"rendered":"https:\/\/quieton.com\/?p=222306775"},"modified":"2025-09-26T12:50:56","modified_gmt":"2025-09-26T10:50:56","slug":"deep-sleep","status":"publish","type":"post","link":"https:\/\/quieton.com\/fr\/deep-sleep\/","title":{"rendered":"Deep Sleep – Stages of Sleep"},"content":{"rendered":"\n

Deep sleep: How much deep sleep do you need?<\/h2><\/div>\n\n\n\n

When you sleep, you go through different stages of sleep<\/a>. These constitute a single sleep cycle that lasts around 90 minutes. You will experience 3-5 sleep cycles each night, each lasting longer than the previous one.  <\/p>\n\n\n\n

The fourth and final stage of the sleep cycle is REM sleep, named after the rapid eye movement that takes place. Light sleep<\/a> and the following deep sleep stage are defined as NREM sleep or non-rapid eye movement sleep.  <\/p>\n\n\n\n

How much deep sleep is enough?<\/h2><\/div>\n\n\n\n

Overall, you should be getting about 7 to 9 hours of sleep each night. Some people can function with less, but they are in a small minority. Out of the 7-9 hours you spend sleeping, about 25 %<\/a> is deep sleep. <\/p>\n\n\n\n

The reason deep sleep is also known as slow wave sleep is that this stage is characterized by long so-called delta waves. Deep sleep is particularly important for recovery and repair because of the human growth hormone that gets released during this stage of the sleep cycle. <\/p>\n\n\n\n

What happens if you do not get enough slow wave sleep?<\/h2><\/div>\n\n\n\n

Not getting enough deep sleep will make learning, focusing and other cognitive tasks much harder the next day. You will also feel groggy after a night of too little deep sleep and crave more unhealthy foods than usual. Getting enough deep sleep supports a healthy immune system and helps combat certain conditions<\/a>, such as obesity, diabetes, cardiovascular disease and even Alzheimer’s disease. <\/p>\n\n\n\n

How to get more deep sleep? <\/h2><\/div>\n\n\n\n

One of the best ways to ensure you are getting enough deep sleep is taking care of your sleep quality and aiming for at least the recommended minimum of 7 hours per night. If you suffer from sleep deprivation<\/a>, you are not going to get enough deep sleep either.  <\/p>\n\n\n\n

Here are some tips for falling asleep and getting more deep sleep. <\/p>\n\n\n\n