Fun fact – unlike other types of weights, kettle bells were not invented for resistance training, or any type of fitness. In fact, they were invented in Russia in the 1700's as a method of weighing crops.
Ironically, it is because kettle bells weren't invented for fitness, that they are so effective and so popular in fitness.
Kettle bells are asymmetrically weighted, which makes them unstable, forcing you to contract more muscles (and build more strength) than if you were lifting the same amount of weight in a dumbbell or barbell.
Instability is good for defining your forearms and shoulders, but not ideal for preventing forearm and should injuries. This is my guide to kettle bell safety.
Dr Mitch Clark