I'm an night owl, and i sleep for 12 hours every day! what could cause this?

Sleep disorder.: Your experience is akin to shift work sleep disorder. When your sleep schedule is erratic and unpredictable, your brain doesn't know if you want to be awake or asleep, so you stay in the middle, tired during the day. It sleep onset and quality are poor. No real way out of this save medications, which aren't the best way to go either. Sleep schedule has to be regular & predictable.

Combo of factors: Possibilities: Poor sleep hygiene/sleep disorder/ medical disorder (less likely). Daytime sleeping disrupts normal sleep patterns - hence 'night owl.' Able to sleep 12 hours/day suggests insufficient time in deep (refreshing) sleep. Basics: Go to bed/wake up same time every day, aim 7-7.5hrs/night, use bedroom only for sleeping (or marital relations). See "better sleeping" checklist for details.