Possible bug, have not been able to remove the "tired" status effect after 8 hours of sleep even with it stating that you need 8 hours of sleep to feel better. I'm pretty much always stuck with this debuff.
Are you given sick or abnormal statuses when fighting enemies?If you cut your sleep time too long, you may not recover even if you rest for 8 hours.Try sleeping until morning for a few days in a row, or if you're sick, try taking medicine.
