The kettlebell is a cast-iron weight resembling a cannonball with a handle used to perform ballistic exercises that combine cardiovascular, strength and flexibility training.
Sizes may range from 4 pounds (1.8 kg) to 175 pounds (79 kg).
Kettlebell exercises build strength and endurance, particularly in the lower back, legs, shoulders and core and also increase grip strength.
The basic movements, such as the swing, snatch, and the clean and jerk, engage the entire body at once, and in a way that mimics real world activities such as shoveling or farm work.