What is the Garmin Sports application, how does it work?

According to the introduction of Garmin, Garmin Sports is a Health & Fitness app on the Android platform. There is currently a 4.12.0 version released on Mar 30, 2020, you can see the details below.

From training partners to online competitions, from training camps to virtual coaching, everything you would ever want to know about running can be found right here!
Out of the variety of online training camps all over the country, there's definitely one that's right for you!
Renowned coaches develop courses exclusively for students of different levels, offer online interactive virtual coaching, and fulfill your needs for scientific analyses of running posture and running mileage as well as continuous improvement.
Use the App to download a training plan and send it to your Garmin running watch. Complete the designated training course while wearing your Garmin running watch. Synchronize the data so the coach can provide you with timely analysis and guidance.
Participate in different types of competitions, win different stat points and badges of honor, and enhance your abilities and cultivate your interests by competing in multi-player challenges with the Garmin community or your friends and family.