Listen to Gym Beast Mode Workout Flexing Muscles (Instrumental) online. Gym Beast Mode Workout Flexing Muscles (Instrumental) is an Instrumental language song and is sung by Gym Motivation Work Out and Fitness Motivation Work Out. Gym Beast Mode Workout Flexing Muscles (Instrumental), from the album Gym Physique Work Out Fitness Crossfit Drill Boxing Motivation Monster Training Fitness, was released in the year 2020. The duration of the song is 2:37. Download Instrumental songs online from JioSaavn.