If you've got 30min, you've got time to crush the only music-led HIIT workout. Stop counting reps. Start training to the beat. STRONG Nation combines body weight, muscle conditioning, cardio and polymetric training moves synced to original music that has been specifically designed to match every single move. Every squat, every lunge, every burpee is driven by the music., helping you make it to that last rep and maybe even five more. Think you have what it takes? We DO!