The shape and size of your poop can give you clues about what's going on inside your body. Thin or skinny poop can be a sign that your digestive system is a bit out of whack. Maybe you've been eating too much of the wrong foods, or not enough of the right ones, and your body is having trouble moving things along.
Think of your digestive system like a highway, with food and waste traveling along it all day. When everything is working smoothly, the traffic flows nicely, and you get a nice, normal-sized poop. But when there's a traffic jam, things can get a little backed up, and you might end up with a skinny stool.
