When was sitting down discovered:
It is difficult to determine when the act of sitting down was first discovered, as sitting down is a natural and instinctive behavior that has likely been practiced by humans and other animals for as long as they have existed.
The concept of furniture specifically designed for sitting, such as chairs, benches, and stools, likely emerged as a result of the need for humans to have a comfortable and convenient place to sit. The earliest known examples of such furniture date back to ancient civilizations, such as the Egyptian and Greek cultures. However, the exact date of their invention is not known.