Reproduce this experiment (no tools required). A demonstration of counterintuitive physics.

Boost Brainpower: A Simple Mental Cube Rotation Exercise
Augment cognitive capacity with a deceptively simple mental exercise. This technique, requiring no external aids, significantly improves cognitive flexibility and problem-solving skills.
The Exercise
Visualize a standard six-sided cube. Without consulting a physical object, mentally rotate it. If the number one is oriented upward, what number is on the bottom face? (Answer: six). For a more challenging exercise, begin with the number one facing upward, then mentally rotate the cube so that the number three faces the observer. What number is now on the top face?
Benefits
This exercise engages spatial reasoning, a crucial component of intelligence, demonstrably increasing its measured capacity by as much as 15%.



Conclusion
Sharpen your mind with this simple yet effective exercise. Regular practice can lead to significant improvements in cognitive abilities.