>>1406141Try using props to change the height of your table or drawing surface. If your chair's height is adjustable, try adjusting it up or down. Otherwise, try placing a cushion or some clothes on the seat to raise yourself up. Perhaps you'll find a configuration that makes your body ache less or take longer to start aching. Even two inches can sometimes make a notable difference.
Though it's a wonder how your body doesn't ache from sitting and posting on the 4chan all day.