draw (third-person singular simple present draws, present participle drawing, simple past drew, past participle drawn) (heading) To move or develop something. To sketch; depict with lines; to produce a picture with pencil, crayon, chalk, etc. on paper, cardboard, etc.
The fetal position might also help ward off conditions like Alzheimer's or Parkinson's: Recent research on animals suggests that your brain does a better job of clearing waste that can lead to these neurological diseases when you're sleeping on your side rather than on your back or stomach. This position's also good for pregnant women.
No you don't have to sleep just on your left side, although it's the best side to lay on. You can lay on either side, just not your belly (not that you could even if you wanted to) and not on your back!! Hi, well you don't need me to quote you from a text book, as I am sure you have had enough of that, I know I did.