How Long Can You Stay Awake? Exploring the Limits of the Human Body

The state of lacking adequate sleep

The patient suffered from sleep deprivation due to his work schedule.

insomniasleep disorder

the natural periodic suspension of consciousness during which the powers of the body are restored

After 48 hours without sleep: Problems with perception of reality begin.

restslumberdormancy

Relating to the mental processes of thinking, understanding, learning, and remembering

After 24 hours without sleep: Cognitive functions begin to decline.

intellectualmental

An experience involving the apparent perception of something not present

The fever caused him to have hallucinations.

delusionillusion

absolutely necessary or required

Water is essential for life.

necessaryvitalcrucial

To become progressively worse

The patient's condition deteriorates rapidly.

worsendeclinedegenerate

Very great or intense

He suffered severe injuries in the accident.

acutecriticaldrastic

Not able to be undone or altered

The person can no longer adequately respond to external stimuli, and the risk of mental disorders and irreversible brain damage increases.

permanentirrevocable

To prevent from having something; to suffer a deprivation

when we deprive ourselves of sleep

deprivation

To undergo or live through an event or situation

A person may experience hallucinations.

feelundergoencounter

To become feeble or reduced in strength; to diminish

The signal weakens as the battery dies.

declinediminishfade

a mental or physical condition in which there is disturbance of normal functioning

risk of mental disorders increases

syndromediseasecondition