Worshippers move through the gap in-between the stones to pray for good health.
The shrine facilities were eventually expanded to enshrine various protective deities. Close to Kanda Shrine’s entrance is a worship area surrounded by a stone barrier. The standardized praying system for Shintoism is to bow twice, clap twice, internally voice your prayer, and complete a final bow. To pray at this particular worship area, one must climb over the barrier from the left, present oneself in front of the shrine and follow the standard praying procedure, and then exit from the gap in the barrier located on the right side of the shrine. This system evolved from the high frequency of people in the area suffering from strokes. The idea was that if you were able to complete all of the steps, you were of apparent good health, and would not suffer a stroke. More abstractly, it became a way of praying for good health. This way of praying was held twice a year: the middle day of the equinoctial week of spring and autumn. (Currently, this way of praying has been temporarily halted)
There were no hospitals in the community, and children were born at home. This was considered to be dangerous as it easily led to complications during birth. Another small shrine in the complex enshrines a female goddess said to watch over the safety of childbirth. Typically, at shrines dedicated to this goddess, the name of the father is inscribed into pillars placed near the shrine after the birth of a child. However, at Kanda Shrine, it is the name of the mother that is carved.