big boobs slow down running
(Image credit: Getty)

A new study has suggested that having big boobs really does make you move slower.

Yep. It turns out that all those excuses about the burden of having more excess breast tissue to carry around than everyone else do actually have some traction behind them.

And this is especially the case when it comes to people who take part in running.

A study has revealed that the bigger your boobs, the slower you are able to run.

MORE: Ashley Graham reveals genius strapless bra hack for ladies with big boobs (opens in new tab)

Scientists at the University of Portsmouth found that runners who have boobs bigger than a DD cup will take longer to complete a marathon than those with an A cup, even the fitness levels of the two runners are similar.

Study leaders found that the time taken to complete the marathon by runners can actually increase by between 4.6 to as much as 8.6 minutes for each higher cup size.

This means that a woman who wears a 32DD sports bra could take more than 18 minutes longer to complete a marathon than someone who wore a sports bra in size 32A, despite having similar training and fitness levels.

big boobs slow down running

Not wearing a supportive bra can shorten your stride (Credit: Getty)

An odd finding was that the difference increased with higher bra band sizes, as scientists found that someone in a 36DD bra would finish the challenge nearly 35 minutes after someone in a 36A bra.

Researchers believe that this could be down to the amount that a woman’s boobs move when she is running, with too much movement causing pain and discomfort.

The study, conducted by Brooks Running, found that woman who run without a bra that is supportive enough can shorten their stride by up to four centimetres.

MORE: Bra companies reveal the one thing you shouldn't do to your bra (opens in new tab)

This means that they could end up running an extra mile more than the length of a marathon.

So big-boobed ladies, don’t beat yourself up if you miss out on that PB by a couple of minute – and get those supportive bras out!

Aleesha Badkar is a lifestyle writer who specialises in health, beauty - and the royals. After completing her MA in Magazine Journalism at the City, the University of London in 2017, she interned at Women’s Health, Stylist, and Harper’s Bazaar, creating features and news pieces on health, beauty, and fitness, wellbeing, and food. She loves to practice what she preaches in her everyday life with copious amounts of herbal tea, Pilates, and hyaluronic acid.