Sleep, Actually
Sleepiness versus ordinary tiredness
Tiredness is low fuel. Sleepiness is pressure to fall asleep. They feel different and respond differently.
Ordinary tiredness is the feeling of being worn out — heavy limbs, low motivation, wanting to sit down. A good night usually helps.
Sleepiness is different: it is active pressure toward sleep that arrives regardless of interest, posture, or how much sleep came before it. Clinicians call the persistent form excessive daytime sleepiness.
The distinction matters at appointments, because “I'm tired” and “I cannot stay awake” lead to very different conversations.
What does that mean?
Related journal prompts
Optional. Recording what you notice may help you prepare questions for a qualified healthcare professional. NAP never infers a cause from what you write.
- Was today mostly heavy-limbed tiredness, sleep pressure, or both?
- What was I doing when the pressure to sleep was strongest?
Related practical tools
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Narcolepsy in plain English
A long-term neurological sleep disorder that affects how reliably the brain holds the boundary between sleep and wake.
What narcolepsy is not
Clearing away the cartoon version: it is not fainting, not a personality trait, and not simply being tired.
Narcolepsy Type 1 and Type 2
Two recognised forms. Type 1 is defined with cataplexy and/or low hypocretin; Type 2 is described without cataplexy.