During my commute to work, I walk up many flights of stairs. When I'm getting from the subway back to where I need to be for the bus ride home, there's an underground passageway that features an intimidating incline. Often, I slowly start to lean forward, hunching my shoulders in the process to build momentum as I walk up those stairs and that incline. Wearing this sports bra actually made me stand taller while weaving through people and trudging up those parts of my commute. I felt good.
While sitting at my desk, I still slouched (I'm a sloucher, after all), but the bra would tug at my shoulders every time that happened. I was able to catch myself and adjust my posture. Normally I can go hours without realising I'm hunched over; this alerted me within minutes.
Image Source: IFGfit