The document discusses breast self-examination (BSE), including its definition, purpose, timing, positions, steps, indications, advantages, and disadvantages. BSE involves women examining their own breasts monthly for lumps, skin changes, nipple discharge, or other abnormalities that could indicate breast cancer. It is recommended for both men and women to begin performing BSE monthly starting at age 20. The 12 step process for thorough BSE is described. BSE allows early detection of potential breast issues but can also cause anxiety for some.