Thyroid hormone tells all of the cells in your body how busy they should be. Too much thyroid hormone (hypERthyroidism), and your body goes into overdrive; not enough thyroid hormone (hypOthyroidism), and your body slows down.
Place the pot on the stove and turn the heat to high. Check for steam escaping from under the lid, then lift the lid carefully to see how the water is doing. Look at the water. If large bubbles are rising from the bottom of the pot to the surface, the water is boiling.
Water will boil at room temperature if the pressure is low enough. Boiling just means that the vapor pressure is the same as the ambient air pressure. Then bubbles of vapor will spontaneously form). If you put the cold water in a bell jar in a vacuum, you can get it to boil sooner.