McGhee found that the average 38D moves about five inches from top to bottom during running. How much do breasts bounce?ĭeirdre McGhee, Ph.D., a researcher with Breast Research Australia at the University of Wollongong, did a study to see just how much breasts bounce while running. The more you bounce, the less elasticity you’ll have over time. We lose elasticity as we age and if we don’t give our breasts enough support. The amount that your breasts bounce depend on how much breast tissue you have and the elasticity of your skin. While no bra can reduce the amount that your breasts weigh, a good one can keep that weight from pulling you forward.
That’s enough weight to pull your torso forward while walking or running. The average D cup pair of breasts can weigh 4 or 5 pounds! Depending on your size you could be lugging several extra pounds around on the front of your chest! Not only is the bouncing uncomfortable, but it can also hinder your performance and cause pain in other areas of the body, like the back or neck.įor those that don’t know, breasts can weigh a lot.
Before we get into the best bras, let’s take a look at why the bouncing happens in the first place.
