What happens if you dont get enough sodium?

In your body? Well Sodium is an essential part of life. It's entrance into cells is what causes your nerves to be functional. Without Sodium, you probably wouldn't live very long. That is why, whenever you are in the hospital for extended periods of time, they give you an IV of Saline. This is to prevent rigor in your muscles. Without sodium, you couldn't move, eat, drink, breathe or live.