Depending on which exercises you are doing, you can use different muscle groups when training with the kettlebell. A general answer to this question is therefore hardly possible. However, there is a tendency to say that kettlebells mainly stimulate the arm and shoulder muscles and can train shoulders, back and chest. The smaller muscles of the fingers and hands are also intensely involved in the training, since they hold the weight with one or both hands. However, with the right exercises, kettlebells provide a comprehensive workout for the whole body.