Hangover

I have a hangover now. So, I have a headache. The reason why is too much drinking last night.
Last night, I went to Korean food restaurant with friend who went to Mt.Yari-gatake together. I could talk about climbing. So I could stay with pleasure.
I drunk a Makkori which is Korean traditional alcohol. Makkori is delicious and easily to drink. So, I drunk it too much. It made me hangover.