The pro runner Brenda Martinez finds listening to her body key – and she uses data to get better at it. To Brenda, a positive mindset ties in with diligent use of data and all other cues that there are. With these ingredients she makes the most of each training session. Brenda trains with #PolarVantageV - the premium multisport watch designed for pro athletes and anyone who trains like a pro. ⌚ | Polar