As pointed out, moderation is the cure for all things "not good for you". Drinking too much water can kill you, not drinking enough can kill you.
Hiking 14 miles in July heat and humidity, you will lose a lot of electrolytes (salt in various forms), which have to be replaced. Sodium is a critical component of electrolytes, controlling the amount of water in the body and important to regulate blood volume and maintainng muscle and nerve functions. if you don't replace this salt in your body you can develop serious health issues stemming from hyponatremia (too little sodium) that has among other symptoms headaches, weakness, lethargy, hallucinations, and muscle spasms. So some fast ingestion of sodium can be beneficial through Raman Soup. If, however, you are sedentary, each meal being Raman Soup, you can develop some serious sodium related health problems.