Did you know having larger breasts can affect posture and gait whilst running? According to a study conducted by Brooks Running Co in conjunction with Portsmouth University, due to poorly controlled breast movement whilst running women loose up to 4cm of stride length. Over a marathon this could translate up to an extra mile! But picking a sports bra can be a really confusing. In this blog we guide you on what you need to know, how to make sure you're running in the right bra and check you have the correct fit.