
When Kim Kardashian Tweeted this picture of herself in her gym kit we couldn't take our eyes off her chest...but not for the reasons you might think.
Exercising isn't about showing off your enormous boobs, Kimmie! In fact, she could be doing irreversible damage to her assets if she continues to wear a bra that is too small.
When you exercise the Coopers Ligaments that hold the breast tissue in place are put under pressure. Lots of moving around causes these ligaments to stretch and tear, which can cause sagging.
And because the breast tissue doesn't contain any muscle this damage is permanent. No amount of exercise or weight lifting can make those bad boys bounce back up!
Researchers at the University of Portsmouth discovered that A cup breasts can bounce 4cm per stride, while a G cup bust can bounce 14cm per stride when running on the treadmill.
Now, we're not sure what size bra Kim K wears, but we're pretty sure she'll be experiencing a lot of movement.
The experts at sports bra retailer, Less Bounce, have this advice for buying a perfectly fitting sports bra...
+All of your breasts should be encased in the bra. You shouldn't be able to see any cleavage - take note Kim.
+The fit should be snug - not so tight that you can't breathe, but tight enough that your bust doesn't move around when you walk.
+You shouldn't be able to fit more than one finger under the bra (across the back and around the front).
+Put two fingers underneath the back strap and pull out - you should only be able to pull the strap an inch away from the body.
What do you think? Leave a comment below to be in with a chance of winning a £100 goodie bag
FACIAL YOGA FOR DEFINED CHEEK BONES
ARE WE ALL ON A SEE-FOOD DIET?
CHRISTMAS 2012: GIFTS FOR THE GYM BUNNY

Beyoncé Is Allegedly Reportedly Officially Pregnant
Media has been churning over speculation that Beyoncé has a new bun in the oven. According to numerous sources, it's allegedly official that the pop star and Jay-Z are expecting a child.

Young Man Kills Largest Alligator in Texas
In Texas, an 18-year-old who has "wanted to hunt alligators for years" has killed an 800-pound alligator. That gator is the largest ever certified in the state of Texas.

Star Trek Into Darkness Movie Review
Mackinley just saw Star Trek Into Darkness, and you should too! If you like Star Trek. Get the details in his review...

'The Simpsons' Welcome Sigur Rós
The Simpsons takes musical guest to the next level this coming Sunday. Sigur Rós will be Groening-ified and contributing the music, including a cover of The Simpsons theme song.
Related Stories
- Kim Kardashian Marrying Kanye West In Big Sur? …
- Kim Kardashian 'Touched' By Cheryl Cole's Support …
- ROLL CALL: Melissa Joan Hart's Kickstarter Film …
- ROLL CALL: Courtney Stodden Reveals She Made A …
- Honey Boo Boo's Mama June Sports Camouflage Wedding …
- Honey Boo Boo's Parents, Mama June Shannon & Sugar …
- Flashback Friday! Take A Look Inside The Kardashian …
- Kim Kardashian defended by trainerCover Media
- Kim Kardashian eyes maternity lineCover Media
- Kim Kardashian 'to take baby on Kanye tour'Cover Media
Most Popular Stories
Today on Yahoo!
Latest celebrity news
Vanness Wu: "No sex before marriage"
Taiwanese star believes that he and his girlfriend should not engage in pre-marital sex More »Vanness Wu: "No sex before marriage"
Pattinson and Stewart split
Robert Pattinson and Kristen Stewart have reportedly ended their romance yet again, after three years … More »Pattinson and Stewart split
Justin Timberlake: Punching pillows is calming
Justin Timberlake has revealed how he keeps calm. More »Justin Timberlake: Punching pillows is calming


