Some People Can Function on 3–5 Hours of Sleep Due to Genetics
A rare genetic mutation allows certain individuals to thrive on only 3–5 hours of sleep. This may be due to faster adenosine clearance or lower accumulation, though most people still need 6–8 hours.
- A small number of people have a genetic mutation enabling short sleep.
- They may clear adenosine more efficiently or accumulate less during the day.
- For most, 6–8 hours of sleep is essential.