20 Minute Shadow Boxing HIIT Workout February 8, 2021The Fitness Nation Close × 20 Minute Shadow Boxing HIIT Workout. Get your weighted gloves on and kets go to work. This 20 minute shadow boxing HIIT workout is a serious sweat. source Related posts:Israel RR Fitness Cardio-Boxing/Step/Running/Workout Music Mix #32 140 bpm 32Count 20191-2-Switch: Boxing GymDuck Under for Weight Loss: Fit Boxing