A similar situation arises when people wander in the forest or desert. Although they may intend to walk in a straight line, if they are lost and have no landmarks to guide them, most people will unconsciously walk slightly towards the left, making a big anticlockwise circle bringing them back to their starting point. The reason for this is that most people have a slightly stronger and more flexible right leg. This is common knowledge among sports scientists, and most people who have undergone strength tests in their legs can confirm it.
Most people also find they can lift their right leg slightly higher than their left.
The right leg has a longer stride than the left one and so when there are no guiding landmarks a circular walking route is the result. Also, the slightly greater strength of the right leg means that when you push on the ground with your right foot, the push to the left is slightly greater than the push to the right produced by the left foot. The longer stride and greater push combine to cause most people to move in an anticlockwise manner in the course of a long walk. The human body is never perfectly symmetrical. In this case, the right leg seems to be longer than the left.