Final answer:
To touch your toes with your heels against a wall without falling, one must keep their center of mass over the base of support, which is hard to do when the feet cannot move to adjust. Women might have an advantage due to a generally lower center of mass, but individual abilities vary.
Step-by-step explanation:
The act of trying to touch your toes while your heels are against a wall involves a concept from physics known as the center of mass and balance. When you lean forward to touch your toes, your body's center of mass shifts forward. Usually, your feet adjust their position to maintain balance, but with your heels against the wall, they are unable to move, resulting in a loss of balance and a tendency to topple over. To touch your toes without falling, you would need to find a way to keep your center of mass over your base of support, perhaps by bending your knees slightly or moving your hips back, which is difficult when up against a wall.
It is a common belief that women might find this task easier due to a lower center of mass resulting from differences in body structure. However, individual flexibility and balance abilities also play a significant role in performing such physical tasks.