The breast itself doesn't contain any muscles and the only 2 supporting structures are the skin and the Cooper’s ligaments. Both of those structures are quite weak mechanically so they're not able to hold the breast in place firmly.
Evenly is on the BBC! Talking about Breast Asymmetry
Different Types Of Sports Tops And How To Choose The Right One - BetterMe
Different Types Of Sports Tops And How To Choose The Right One - BetterMe
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How to avoid breast damage when exercising: an interview with Professor Joanna Scurr
Research Group in Breast Health
Lactation Consultant
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