Sports bras have been designed around the anatomy of our breasts and the way your breasts move during exercise. We have covered the basics below but remember that no breasts are the same and even your own are sisters, not twins!

High impact sports bras breast anatomy science

The facts:

> There are no muscles contained within the breasts. The chest muscles (pectorlaris minor & pectorlaris major) for women sit behind the breast. This is common misconception and many people believe there are muscles within the breasts which means you can train them to be more perky- sadly, not true!

> The main components of the breast is fatty tissue, ligaments, milk ducts and skin. A sports bra needs to be comfortable and adapt to changes of the breasts that a women can experience throughout a month and even a year. From periods to pregnancy, because your breasts can change shape, size and texture up to 5 times in a month. 

> We all have different breast compositions (which is why there are so many varieties of sports bras). Some breasts will have a higher % of tissue and less fat and vice versa, this means that different bra types will suit different women.

> The main supporting structures of your breast are the skin and the cooper's ligaments.

> Skin is not particularly stretchy and ligaments aren't designed to be over stretched. If the ligaments stretch too far, they can break and the damage is irreversible.

> Stretch marks appear when the skin is overstretched due to rapid and continuous movement, by wearing a sports bra and reducing this movement you can reduce the chances of stretch marks and sagging.

> From research, it has been found that when exercising, the breasts move in a figure of 8. They move up, down, left, right, in and out. 

> During exercise our breasts will move up, down, side to side, in and out.

> Sports bras are designed to reduce the figure of 8 movement, through either compressing the breasts, encapsulating them, or both.
- See our different types of sports bras here.