The Sleep Journal
Sleep Disorders
Browse all sleep disorders articles.
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Only getting 4 hours of sleep a night: Side effects & consequences
Consistently sleeping only four hours a night is well below the seven to nine hours most adults need, and the effects compound over time. Short-term consequences include impaired focus, mood swings, and reduced reaction time. Long-term sleep deprivation raises the risk of high blood pressure, type 2 diabetes, heart disease, and cognitive decline.
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Should you be keeping a sleep journal?
Learn what sleep journals track, how they reveal patterns in your habits, and why they’re a valuable tool for improving sleep health and talking to your doctor.
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Why am I always so tired in the morning?
Constant morning fatigue could signal lifestyle issues, medication side effects, or conditions like sleep apnea. Learn the common causes of hypersomnia and how to fix it.
What causes snoring?
Snoring happens when relaxed throat tissues partially block the airway during sleep, causing the familiar vibrating sound. The most common contributors include sleeping on your back, excess weight around the neck, alcohol before bed, nasal congestion, and anatomical factors like a narrow airway or enlarged tonsils. Loud, frequent snoring — especially with gasping or pauses in breathing — can be a sign of sleep apnea.
Waking up gasping for air? Sleep apnea may be to blame
While the occasional awakening gasping for air could be due to something simple like a bad dream, sleeping on your face, or nasal congestion, it’s also a common symptom of sleep apnea.
Most common causes of daytime sleepiness
Chronic daytime sleepiness is most often caused by insufficient or poor-quality sleep — including undiagnosed sleep apnea, which fragments sleep without you knowing it. Other common causes include medications, mental health conditions like depression, circadian rhythm disruptions, and conditions such as hypothyroidism. Identifying the underlying cause is essential because the right treatment depends on what's driving it.
I’m drooling in my sleep, what’s wrong with me?
Drooling from time to time during sleep is normal, and saliva plays a crucial role in oral hygiene and digestion. However, if you’re suffering from frequent nighttime drooling, there may be an underlying issue to address.
Waking up with headaches every morning? It could be hypoxia
While headaches can be caused by things like teeth grinding, dehydration, or sedatives, morning pains are a classic symptom of sleep apnea, a serious condition that can lead to long-term consequences without treatment.
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REM vs core vs deep sleep: Unpacking the different sleep cycles
Sleep cycles through four stages roughly every 90 minutes. Deep sleep (N3) is when the body repairs tissue and strengthens the immune system; REM sleep is when the brain consolidates memories and processes emotions; core sleep (N2) makes up the largest portion of the night. All stages matter — and sleep apnea disrupts them all, which is why untreated apnea leaves people exhausted regardless of how many hours they spend in bed.
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