It is not safe or recommended to eat any rocks. While some misleading or satirical sources have jokingly suggested eating rocks daily for health benefits, in reality, consuming rocks can pose serious health risks such as choking, tooth damage, and ingestion of harmful toxins or heavy metals. There is no scientific or medical endorsement for eating rocks as part of a diet, and it is generally considered harmful to human health.

In summary, no amount of rock eating is advisable or healthy. If nutritional minerals are desired, it’s best to obtain them through appropriate food sources or supplements rather than attempting to eat rocks.