Fox News Digital spoke with several sleep experts about the most common reasons for daytime sleepiness, including:
1. Bad sleeping habits
While feeling constantly tired can be linked to many factors, it all starts with getting enough sleep.
That's according to Tim Roberts, vice president of science and innovation at Therabody, a Texas-based wellness technology firm.
The first thing to evaluate when trying to build healthy and improved habits should be your sleep schedule.
Consider whether you really sleep seven to eight hours.
Next, consider whether you have a sleeping environment that helps you sleep better.
2. Restlessness caused by stress
Many people have difficulty falling asleep, then wake up often during the night and feel tired during the day.
The main cause of restlessness at night seems to be related to anxiety or stress.
It is not uncommon for the human nervous system to need stress relief support, so that it can naturally switch from sympathetic (fight or flight) to parasympathetic (rest and digest) mode.
The sympathetic mode of operation is activated in situations of fight or flight, when the organism faces danger or stress. This way of working leads to an increase in heart rate, rapid breathing, dilation of blood vessels, increase in blood pressure and the like, in order to prepare the body for action.
Shifting from sympathetic to parasympathetic mode of operation can have a significant effect on sleep. When the brain is in sympathetic mode, the body is in a state of alertness and activity, which can make it difficult to fall asleep and maintain deep sleep. High levels of stress or anxiety can activate the sympathetic system and lead to sleep problems, such as insomnia or frequent awakenings during the night.
On the other hand, switching to the parasympathetic mode of operation encourages relaxation, calmness and rest. When the brain switches to this mode, the body prepares for sleep and recovery. This can help you fall asleep faster and maintain quality sleep during the night.
It is important to note that there are various factors that can affect the transition between these two modes of operation, such as stress level, activity level, environment and sleeping habits. Maintaining a healthy lifestyle, such as regular exercise, reducing stress and establishing a sleep routine, can help balance brain activity and achieve optimal sleep quality.
3. Lack of vitamins
Vitamins play an important role in sleep health, however, a significant number of people do not get the right amount of vitamins from food.
As a result, constant fatigue can sometimes be caused by a lack of essential nutrients crucial for optimal energy production.
If so, sleep vitamin supplements are designed to compensate for the vitamin deficiency and help restore health to balance.
Research suggests that vitamins C and D and B vitamins may be key to maintaining healthy sleep.
Specifically, vitamin D, in addition to its key role in bone health, is also involved in the parts of the brain that control the sleep-wake cycle.
4. Blue light at night
Light greatly affects our sleep/wake rhythm, so if you're surrounded by blue light from your devices you may have trouble falling asleep.
Blue light, especially that emitted by electronic devices such as smartphones, tablets, televisions and computers, can have a negative effect on sleep.
Blue light has a high frequency and is similar to the natural light that comes from the sun. When we are exposed to blue light in the evening, it can disrupt the natural rhythm of sleep and wakefulness.
In addition, blue light can cause other sleep problems. Its stimulating nature can lead to increased alertness and reduced ability to fall asleep quickly.
To reduce the negative impact of blue light on sleep, it is recommended to avoid exposure to electronic devices at least an hour before bedtime.
Of course, if you're tired all day long, it's always best to check with your doctor to see if there's an underlying medical condition that needs attention.
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