Your boobs can move up to 21cm when you run - how your bra could be making them sag
![](https://www.thesun.co.uk/wp-content/uploads/2018/11/NINTCHDBPICT000452703963.jpg)
![](https://www.thesun.ie/wp-content/uploads/sites/3/2018/11/NINTCHDBPICT0003532496662-1.jpg?strip=all&quality=100&w=1920&h=1414&crop=1)
Your boobs can move up to 21cm when you run - how your bra could be making them sag
![](https://www.thesun.ie/wp-content/uploads/sites/3/2018/11/penneys_1031415.jpg)
Penneys unveil new Spring/Summer 2019 collection in November - and Riverdale star Cole Sprouse photographed the new line
![](https://www.thesun.co.uk/wp-content/uploads/2018/11/NINTCHDBPICT000452638004.jpg)
Woman, 28, sheds an incredible 4 stone WITHOUT going to the gym - and eating more than before
![](https://www.thesun.co.uk/wp-content/uploads/2018/11/NINTCHDBPICT000452703964.jpg)
Your boobs can move up to 21cm when you run - how your bra could be making them sag
![](https://www.thesun.ie/wp-content/uploads/sites/3/2024/03/newspress-collage-wg4otrx8z-1711364168422.jpg?1711364298&strip=all&w=300&h=192&crop=1)
Your boobs can move up to 21cm when you run - how your bra could be making them sag
![](https://www.thesun.co.uk/wp-content/uploads/2018/11/NINTCHDBPICT000452638000.jpg)
Woman, 28, sheds an incredible 4 stone WITHOUT going to the gym - and eating more than before
![](https://www.thesun.ie/wp-content/uploads/sites/3/2018/11/NINTCHDBPICT000433875898.jpg)
Christmas markets are the perfect place to get in festive spirit - here's some of Ireland's best spots for 2018
![](https://www.thesun.ie/wp-content/uploads/sites/3/2018/11/TEMPLATE_-TWO-COMP-2F-MID-SQUARE-PIC59.jpg?w=620)
Christmas markets are the perfect place to get in festive spirit - here's some of Ireland's best spots for 2018
![](https://www.thesun.co.uk/wp-content/uploads/2018/11/NINTCHDBPICT000452703963.jpg)
Your boobs can move up to 21cm when you run - how your bra could be making them sag