i have this kind of anxiety to end something, so i tend either to finish something in one sitting or chances are it will be forever forgotten on my files XD

Assuming I have no other obligations, I can totally spend the entire day on it. However, that doesn't really happen much with school, so drawing time has to come out of life functions time, like showers, eating, and sleep xD. That results to about a couple hours max, until I can't (or can't afford to) stay awake any more lol.

_{On the bright side, not eating means I finally lost my freshman 15 .}

Haha, Six to eight hours for me!!

I love drawing, but I don't get anywhere with it because I dislike most of my drawings!

I once had a teacher that said one was a serious artist when they could draw for a whole day straight, no eating, no music, just drawing....

and then he assigned us that project for homework ona 48x48 paper x_X

Kind of depends on what mood I'm in or how I'm feeling, but I can pretty much go all day at times just sitting and drawing in my sketchbook or sitting in front of my tablet. XD My dad gets pretty angry when I do, though. I get a bit antisocial. :U

A few hours.

I would sit longer than that, but I gotta get up and stretch, I've got back issues XD

depends on motivation, time, skill level (XD) school, homework, and a lot of other factors
if it were up to me, i would draw nonstop c:

Few hours. On rare occasions I would be able to streak my way through work as long as the TV is rolling with something good on.

If I have motivation, 5-4 hours.
If I don't, 10 minutes ;w;