Where does doldrums name gets from?

Answer 1

When ships were sailing vessels they needed wind to make them move. At some times of the ear, near the equator, there were no winds for extended periods of time. So the ships were essentially stuck in one place, not being able to move forward. These calm periods were known as the doldrums.

To be stuck in the doldrums today means that you'd like to be doing something, but you are stuck waiting for something to happen that will let you get started and move on.

The word itself comes from the same root as dull. That's what it would be like sitting on a ship for days in the hot sun with no way of moving and the food and water running out..