I accidentally took an hour-long nap around dinner time because I tend to doze off when I'm listening to music in my bedroom (unless it's bedtime). I took a sleep aid at my regular bedtime, and then spent several hours in a not-quite-asleep state of limbo before getting up in the middle of the night. Why is it so easy for me to nap during the day but not at bedtime? I'll probably catch some zzz's around ninish this morning after the sun rises. I'm more comfortable dozing off in the morning sunlight than the dead of night for some reason.