Even certain male deities representing regeneration and fertility were occasionally depicted with breast-like appendices, such as the river god Hapy who was considered to be responsible for the annual overflowing of the Nile. Sex Your guy shouldn't be the only one ogling your breasts during sex—check them out next time you're getting frisky. The chest thoracic cavity progressively slopes outwards from the thoracic inlet atop the breastbone and above to the lowest ribs that support the breasts. Alcohol Women often underestimate the impact booze can have on their breast health, Dr. The nipple of the breast is surrounded by the areola nipple-areola complex. Doctors don't know why this occurs, but if you experience breast pain or "nodularity," as doctors refer to the lumpiness, try cutting out caffeine for several weeks, Dr. Breast-shaped hill There are many mountains named after the breast because they resemble it in appearance and so are objects of religious and ancestral veneration as a fertility symbol and of well-being. Next, the nipple and areola grow larger and darken in color and over time breasts continue to grow. As a mammary gland , the breast is composed of differing layers of tissue , predominantly two types: Factors that appear to be implicated in decreasing the risk of breast cancer are regular breast examinations by health care professionals, regular mammograms , self-examination of breasts , healthy diet, and exercise to decrease excess body fat. Sensation in the breast is provided by the peripheral nervous system innervation by means of the front anterior and side lateral cutaneous branches of the fourth-, fifth-, and sixth intercostal nerves. During this time, the mammary glands grow in size and volume and begin resting on the chest. During foreplay, your heart rate and blood pressure increase, which causes your breasts to swell and your veins to become more prominent. Breast development The breasts are principally composed of adipose, glandular , and connective tissues. When you lose weight, you may notice they shrink. Many female deities representing love and fertility were associated with breasts and breast milk. In boys and men, abnormal breast development is manifested as gynecomastia , the consequence of a biochemical imbalance between the normal levels of estrogen and testosterone in the male body.