International Sleep Day: can humans sleep too much? The French will be made aware of the importance of sleeping well every day. To be considered a long sleeper, you must reach 9 hours of daily sleep, beyond that, you are in excess.
2% of the French population suffers from narcolepsy, which essentially results in irrepressible bouts of sleep occurring several times a day, even during full activity. Depressive disorders are also often unfairly linked to excess sleep, but they are not related.