Problems falling asleep
Our sleep works in cycles of 60 to 120 minutes each. During these cycles we go through different stages. 75% of the cycle, we are in slow-wave sleep. It allows the physical, biological and immune restoration of the body. It is generally during this phase that sleepwalking or night terrors can appear. Slow-wave sleep consists of three phases: the transition phase between wakefulness and sleep, the light sleep phase and the deep sleep phase. Brain waves are of high amplitude and low frequency, muscle tone decreases as well as cerebral metabolism. The remaining 25% of the cycle we spend in REM sleep. Muscle tone is completely abolished. This stage is conducive to dreams, psychic recovery, memorization and assimilation of learning.
On average, a good night's sleep consists of 3 to 5 cycles of 90 minutes. With age, sleep changes: slow-wave sleep becomes less deep and paradoxical sleep becomes shorter. This may explain the appearance of certain sleep disorders in adults. To be restorative, sleep must be sufficient in quality and quantity. The number of hours of sleep will vary depending on each person's age, activity and individual needs. On average :
- A newborn needs 14 to 17 hours of sleep per day
- A teenager needs 8 to 10 hours of sleep per day
- An adult needs 7 to 9 hours of sleep per day
- A senior (over 65 years old) needs 7 to 8 hours of sleep per day
There is also a small proportion of people who we would describe as short sleepers and for whom 3 to 6 hours of sleep are enough without feeling any alteration in their daily functioning. Conversely, there are heavy sleepers who need 10 to 12 hours of sleep to feel good on a daily basis.
We all have a rough night or two from time to time. This does not mean that we have poor sleep. So, what are the clues that should alert us to the quality of our sleep? First of all, we must distinguish between occasional and chronic.
If you have any of the following signs chronically, it is important to consult a sleep professional :
- You have trouble getting to sleep and you fall asleep late almost every night
- You wake up one or more times during the night regularly and have difficulty getting back to sleep
- You wake up around 5 a.m. regularly
- You have been waking up tired in the morning for several weeks
- You have difficulty concentrating, finding your words
- Vous avez des maux de tete
- Your jaw hurts
- You need a stimulant to help you wake up and keep you alert throughout the day (coffee, tea, mate, guarana, sugary drinks, sodas, etc.).