How to make a knee pain running app that won’t break the bank

In this episode of Business Insider's Run, we're going to look at how to make an app that's not only great for running, but also great for money.In the podcast, we talk to running coach and founder of Run-Run Run-Go, Matt Lough.In this edition, Matt talks about the lessons he learned while running the first 6,000 miles of the Ironman triathlon, what it's like to run a marathon, and the biggest cha...