Our blood is a very unique fluid. It doesn't just contain water. It contains a whole load of other dissolved substances such as proteins, electrolytes and vitamins, as well as other insoluble components such as the red blood cells.
The idea of having a stable baseline is firmly ingrained in our psyches. The baseline provides a sense of stability for us in our day-to-day lives. For example, a salaried employee gets paid a baseline salary of X dollars per month, and from there, they are able to properly plan and budget for their expenses.
All of us have dreams. They can appear in the day as we're zoning out and daydreaming, or they can appear in the night as we sleep. Some dreams are pleasant and leave us with warm fuzzy feelings when we wake up in the morning, while others are downright unpleasant nightmares.
According to this article, an electrolyte is a substance that can dissociate when dissolved in water and has the ability to conduct an electrical current.
People living in temperate countries tend to be highly susceptible to the symptoms of hay fever when it comes round to spring time.