Restrictive bras can cause restricted lymph flow, especially underwire bras. Underwire is especially tight and cause strategic pressure on the breast to promote attractive cleavage.

The lymph system flows throughout the entire body, but is especially dense in the breasts. If the lymph can not move freely through the breasts, it creates the environment for unhealthy breasts.

Bra manufacturers have now created new ways of keeping the breasts healthy, by not restricting the cleansing lymphs.

Another easy way to keep your breasts healthy is to dry brush! Using a dry brush on the breasts stimulates the lymphs, allowing a natural form of detoxification to occur. Dry brushing can also help to create circulation and proper blood flow to the breasts.
- Do Bras Cause Unhealthy Breasts? - Lisa's Thermography and Wellness, New Jersey

To learn even more benefits of dry brushing, and keeping your breasts healthy- check out this link below!
http://articles.mercola.com/sites/articles/archive/2014/02/24/dry-skin-brushing.aspx

How to Dry Skin Brush In 6 Easy Steps - Do Bras Cause Unhealthy Breasts? - Lisa's Thermography and Wellness, New Jersey