Best Smart Phone Applications for Fitness
https://www.active.com/fitness/articles/18-best-health-and-fitness-apps-of-2018
"According to a recent study, participants who used fitness apps were much more active compared to nonusers and—get this—even had a lower body mass index. The study's authors believe apps help people overcome barriers like a lack of understanding or organization, which leads to better exercise habits. Over time, these improved habits can mean big changes. "