CNBC update – “It’s official: Health, not just wellness, is Apple’s future”
https://www.cnbc.com/2017/09/12/apple-health-not-just-wellness-is-its-future.html
https://www.cnbc.com/2017/09/12/apple-health-not-just-wellness-is-its-future.html
https://www.runnersworld.com/sweat-science/what-makes-a-running-stride-efficient
Article in NY Times https://well.blogs.nytimes.com/2015/02/19/walk-hard-walk-easy-repeat/?_r=0 Original article: https://www.ncbi.nlm.nih.gov/pubmed/25539937