The 8 Stages Of Sleep Deprivation

Yawning And Fatigue

The first signs of sleep deprivation are usually increased yawning and a feeling of fatigue. This is your body's initial response to a lack of sleep.

Mood Changes

As sleep deprivation continues, you might experience mood changes such as irritability, frustration, and mood swings.

Cognitive Impairment

Difficulty concentrating, memory problems, and a decrease in cognitive abilities become more noticeable.

Decreased Coordination

 Clumsiness and loss of coordination occur. Sleep deprivation disrupts motor abilities and reaction times due to central nervous system effects.

Hallucinations And Delusions

In more extreme cases of prolonged sleep deprivation, hallucinations and delusions (strong beliefs in things that are clearly not true) can occur.


These are brief sleep bouts when awake. Microsleeps, a sign of acute sleep deprivation, are dangerous, especially when driving.

Health Deterioration

Long-term sleep deprivation can cause immune system weakness, high blood pressure, diabetes, and heart disease.

Sleep Disorders

In rare and extreme cases, chronic sleep deprivation might contribute to the development of fatal sleep disorders like fatal familial insomnia, a rare genetic condition.