Ninja rocks are broken shards of spark plugs formed by smashing the ceramic portion of the spark plug with a hammer or other large object.ince they can quickly and quietly fracture the glass side windows on most cars, ninja rocks have been used in  smash-and-grab  auto burglaries since at least 1995 (at least by Slovenian car burglers).
What is recurrent bacterial vaginosis? Recurrent bacterial vaginosis is an imbalance of the vaginal bacteria normally present in the vagina. Bacterial vaginosis is a common condition and treatment is available; however, in some women the condition may recur or even become chronic, requiring multiple and sometimes long-term treatments.
Bacterial Vaginosis During Pregnancy. Certain pregnancy problems are more common in women who have bacterial vaginosis than in women who do not. Bacterial vaginosis has been linked to miscarriage, preterm delivery (before 37 completed weeks of pregnancy), and pelvic infection after childbirth. Experts continue to research whether it is a direct or indirect cause.