How often do you burn the midnight oil?

Whenever school's in session! I'm an Animal Science major and all of the prerequisite math and science courses I need to take for vet school keep me more than busy. How often do you burn the midnight oil?
I'm in college, a genetics major, so ... 9 nights a week. yes, 9. I work 9 days worth in just 5 weekdays. AUGH! it'll all pay off when I'm researching a cure. How often do you burn the midnight oil?
Never when it come to 8 or 9 pm i am in the bed.. i am saving the midnight oil for rougher times.
Every night , very often ;)
Just about every night, unfortunately
Often... Nearly every job I have ever had has kept me up late. Even when I'm off, I rarely get to bed before 1am.
Sometimes.
well lately i do every night, insomnia doesn't read clocks very well.
So often that I'm about to run out of oil
every night for the past year
everynight.
daily
lately, ALL the time.......even when I'm trying to sleep.
Way too much!
My midnight oil lamp hasn't been lit for years.
at times
every night of my life!
i would have to say too often!
I rarely do that..cause someone else does that ^3^