Motivation : 12-Minute Kettlebell Blast Workout August 4, 2017, 11:00 pm 1.9k Views Fitness and body Motivation Before and After Description 12-Minute Kettlebell Blast Workout. Works quads, hamstring, flutes, lower back, upper back, shoulders, triceps and biceps. It's the ultimate full body workout for the time crunched 19 shares