Breast self examination involves inspecting and palpating the breasts monthly to check for any abnormalities. It should be conducted once a month by women over 20 years old, on a fixed date preferably one week after menstruation. The examination involves looking at breasts in mirrors in different positions and then feeling the breasts with fingers in circular and vertical motions. Any lumps or changes found should be reported to a doctor, as early detection of breast cancer can lead to complete cure. Regular breast self examination is important for all women to practice.