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Participants ranged from 18 to 35 years old, with bra sizes from a B to D cup.
Science says wearing a sports bra can make women run faster.
That's according to a new study published in Frontiers in Sports and Active Living.
A research team - at the University of Memphis - found a high support bra increased running times by 4.2 seconds, for every minute.
Participants ranged from 18 to 35 years old, with bra sizes from a B to D cup.