If you want to ease the stress a simple walk would be helpful. BTS has the perfect song to be the soundtrack of the time at the park.
The biggest boy band in the world has songs for all the occasions. The members of Bangtan know pretty well how to relax and have a good time. These characteristics are reflected in their music.
You don't need to be 'productive' all the time. Sometimes it is great just to spend time by ourselves and enjoy some fresh air. Don't worry, BTS will be there with you through their music. All you need to do is added these tracks in your playlist