Sleeping too much can cause psychosis in me. My mind is not active in the same way asleep and I have no control. What a nightmare senerio: you are locked up in a mental institution prison for life and they over medicate you!
yeah i get sleep hangovers when i sleep too much and am tired and sluggish for a couple hours after waking up. today i woke up early and went for a run, but then crashed for another 3 hours, and felt like poo when i woke up the 2nd time.