Seo Toolbar by Kettlebell Workout - Version 1.0 Strength training is a must if you're interested in building a healthy, and attractive body. Strength training also boosts hormones such as HGH, which helps to build lean muscle mass. You can use as many exercise machines as you want, but they won't build lean muscle mass as well as kettlebells. Driving across town to use a gym's barbells is also labor-intensive, and expensive.Fortunately, kettlebell workouts allow you to work out at home, while achieving the same or better results as you would at the gym. In order to achieve these results, however, you will need to follow an efficient and effective kettlebell workout. Here is one that will undoubtedly get you the results you're after.