Kettlebells will lead to greater fat loss
Kettlebells increase your metabolism by creating dense muscle mass. The fat loss power of kettbells is explained by the extremely high metabolic cost of throwing the weight around combined with the fat burning effect of the growth hormone stimulated by such exercises.

Kettlebells deliver unparalleled cardio benefits.
  With kettlebell workout, two different actions must work together: resistance and overall body movement. The ballistic nature of kettlebell lifting creates a challenge for the muscles that cardio workout alone does not do.

Kettlebells are different from dumbbells and barbells
  Kettlebells don't require a special facility. They are nearly indestructible and relatively inexpensive. Furthermore they deliver faster results than any other type of workout.

The center of gravity is distally placed thereby creating greater forces of inertia. In order to control the weight you must employ the use of the stabilizing muscles. Isolation exercises such as those done with dumbbells and barbells do not hit those stabilizing muscles to the same degree. Isolation exercises train only the major muscle groups.

Kettlebells rehabilitate and prevent future injury
  Soviet research shows that the intense grip required to swing (and hold) the kettlebell along with the dynamic movement helps to prevent and/or reduce all types of arthritis. The acceleration/deceleration of moving the kettlebell strengthens the connective tissues (tendons, ligaments, cartilage) and increases shoulder mobility, strength and flexibility reducing the possibility of injury.

Kettlebells will make your back strong and resilient by conditioning your back statically and dynamically. Many Russians have successfully rehabilitated hopeless back injuries with kettlebells.

Kettlebells and general conditioning
  Kettlebell training mimics natural human movement thereby making everyday activities easier and injury less likely.

Kettlebell offer the most functional training because the body must work as a unit. Every lift with the kettlebell engages the entire body. The kettlebell movement is never a single joint movement. Every swing, lift, press engages each joint and muscle group forcing the body to always work as a unified whole.
  Flipping the kettlebell provides a unique challenge to the nervous system. And physical challenge stresses the body. Since the human body does not naturally like to be stressed it attempts to adapt. Via this adaptation muscularity and flexibility develop.

Kettlebells increase mental focus
  The task associated with kettlebells is a complex requiring precise body movements which must be performed sequentially. At each moment the lifter must be focused on the movement. The result is improved coordination and mental focus.

Kettlebells for the athlete
  The kb training is the best training for any swing related sport (e.g., golf, baseball, football, volleyball, tennis, etc.) because the movement in kettlebell training mimics the swing in these sports by forcing explosive hip movement. Most kettlebell movement is explosive and fluid requiring one to move through different planes of motion creating strength in each plane. The kinematic sequence of your body during a swing requires a series of joints to open and close passing explosive force to the next joint in the sequence. Isolation exercises improve only appearance but not functional abilities.

Additionally, kettlebells will build overall muscle endurance and fitness leading to a stronger game of any kind. Kettlebells were the conditioning tool of choice for all athletes in the Soviet Union.

Who trains with kettlebells?
  Men and women, regardless of age or physical fitness level, who want to improve overall health and appearance.

Athletes who win

Special forces whose life depends on their physical and mental integrity.

Anyone who wants to build mental and physical strength and resilience.

Kettlebells develop unprecedented stamina
  Kettlebell workout demands constant exertion of energy. It forces extreme concentration of muscle and mind and in this way pushes your physical body and mind to the absolute edge of existence.