A kettlebells structure is broken down into a handle, corner(s), horn(s), window, bell and base (see above). The kettlebell is completely unique as a resistance training tool in comparison to traditional free-weight equipment.
Due to their unique structure, a kettlebells centre of mass extends beyond the hand when used. Kettlebells also provide an unstable force when they are being handled. As a result of these factors and the kettlebells unique structure kettlebell training allows for ballistic, swinging type movements.
The explosive movements involved with kettlebell workouts force your stabilizer muscles to work overtime. Controlling the weight of the bell provides a whole-body strength and conditioning workout using just a single kettlebell. Furthermore, the ‘release’ part of a movement means that kettlebell training is much easier on the wrists than dumbbell training.