A physical therapist and trainer weighs in on the benefits of fitness apps for on-the-go workouts, fitness tracking and more. Learn more: si.com/showcase/fitness/best-fitness-apps #sishowcase #fitnessapps #fitness #cardio #strength #personaltraining #fitnessreviews #homefitness #fitnessappreviews The products featured in this article have been independently reviewed. When you buy something through the retail links on this page, we may earn commission at no cost to you, the reader. The Sports Illustrated editorial team is not involved in the creation of this content. Learn more: si.com/showcase/author/sponsorship-disclaimer ---------------------------------------------------------------------------------------------------------- Subscribe to SI on YouTube! youtube.com/channel/UCPAt6z5uX_c5Eo_cSNROzYw?sub_confirmation=1 Subscribe to SI today for access to the biggest teams, the boldest names, and the legendary stories that only we can deliver: http...