Music has been scientifically proven to reduce stress and decrease the amount of time it takes to recover from a stressful situation! You can read the original scientific study here: https://bit.ly/sciencesays_2, or read on for our quick summary for the key points.
In a test between listening to music, the sound of running water, and silence, the people who listened to music had the least intense response to stress and recovered the fastest after the stressful situation was over!
Keep practicing! Not only is it making you a better musician, but you very well may be reducing your own stress in the process!