I have been a nude artists model for 7 years. AMA!
Although I am now through college and work full-time as a high school teacher, I occasionally still work for individual artists, but I used to be a full time life model, working for the local college art department, individual artists, casual groups, and evening classes.
In total I've done this for over 7 years.
Here are a couple of examples of artists' work (sfw as they're all drawings):
These might seem pretty normal, but when I started I was hugely overweight...
Here is a sketch from those 'dark days': http://imgur.com/76cxt.jpg
Ask me anything!
Aaaaaaaand, an example of why I sometimes felt my job was not worthwhile:
And because there have been one or two who have questioned whether or not I am a chick and I am in possession of all of these works:
EDIT: My eyes. They feel like they're going to bleed. I'm going to bed. Thanks for all the positive comments/interesting questions, portrait requests! I'll catch any unanswered questions tomorrow. Oh, and FINE, I'll post a photo of my actual self, from Halloween a couple of years ago (I was a zebra): Imgur Night!