Transcript

NARRATOR

There are significant variations in breast size and shape, with larger breasts placing more stress on their supporting structures and potentially causing more pain. The movement of poorly supported breasts can impact sporting performance by increasing muscle activity in the pectorals and deltoids using up valuable energy during exercise. Breast movement also contributes to a less economical running style and a decrease in stride length.

To illustrate the impact of breast movement on running performance, if you had two identical women running a marathon, one in a well-fitting sports bra and one in a poorly fitted sports bra, the woman with the perfectly fitted bra would finish around a mile ahead of the one wearing a poorly fitted bra.