In The intelligent bra that takes the jiggling out of jogging, by James Mills, it’s proven that not all jiggling is worthy of giggling:
The volunteers, aged 30 and 39, one wearing a 36D bra and the other a 38DD, were instructed to walk on a treadmill at 4.3mph and then speed up to a jog of 6.2mph.
From the sensors, the team was able to glean that all the strain and stress from the breast movement was being borne by the straps.
This was causing the shoulder pain and tingling in the arms that many women suffer – and could cause long-term nerve damage.
Reporting their findings in the latest issue of the Journal of Biomechanics, they say: “A consequence of current brassiere design is that the brassiere straps bear much of the load generated by breast momentum during physical activity.
“As breast mass increases, breast bounce momentum also increases, placing large loads on the straps and, in turn, excessive pressure on the wearer’s shoulders.”
The experts add: “Apart from strap-related pain, many females, particularly largebreasted women, are restricted from participating in physical activity due to exerciseinduced breast pain associated with excessive vertical breast displacement.”
As a large breasted woman, I know this. Sure, I didn’t have the sensors to do the math; but rubbing, shoulder & arm pain, numbness in my arms (sometimes my fingers), this I know.
Now, consider that women who carry shoulder bags are carrying an additional 5+ pounds on average on their already over-burdened shoulders, and you men might just have a clue how not fun being a girl with a rack might be.
Our whining for back rubs isn’t just us being little demanding wenches, now is it?