Doodle-ing

Have you ever feel so tired whenever you are staying up late trying hard to finish your work / assignments ? What do you do to make you feel a little relaxed?

As far as I know, most of us like to drink coffee (or any energy drink that can help keep them energized and awake), eat something, watch some funny video on the internet, listen to some music, or take a power nap.

In my case, I will start to doodle and draw. So here is something that I did last night.

I tend to doodle on sleepless nights.