The answer to this riddle is a seesaw. A seesaw rises on one side while simultaneously falling on the other. It’s a perfect metaphor for balance and opposing forces in life. As one end goes up, the other naturally descends, illustrating the concept of equilibrium in motion. This question also invites a broader interpretation: it could symbolize emotions, fortunes, or even the sun and moon—one rises while the other falls. It’s a clever riddle because it prompts you to think about interconnectedness and how opposing movements can create harmony and rhythm in both nature and everyday life.