Kettlebell lifting in the context of "Weightlifting"

In weight training, a kettlebell is a cast-iron or cast-steel ball with a handle attached to the top, resembling a cannonball with a handle. It is used to perform a range of exercises; primarily ballistic exercises that combine cardiovascular, strength and mobility training. Kettlebells are the primary equipment used in the strength sport of kettlebell lifting.

CrossFit is a branded fitness regimen that involves constantly varied functional movements performed at high intensity. The method was developed by Greg Glassman, who founded CrossFit with Lauren Jenai in 2000, with CrossFit as its registered trademark. The company forms what has been described as the biggest fitness chain in the world, with around 10,000 affiliated gyms in over 150 countries as of 2025, about 40% of which are located in the United States.

CrossFit is promoted as both a physical exercise philosophy and a competitive fitness sport, incorporating elements from high-intensity interval training (HIIT), Olympic weightlifting, plyometrics, powerlifting, gymnastics, kettlebell lifting, calisthenics, strongman, and other exercises. CrossFit presents its training program as one that can best prepare its trainees for any physical contingency, preparing them for what may be "unknown" and "unknowable". It is practiced by members in CrossFit-affiliated gyms, and by individuals who complete daily workouts (otherwise known as "WODs" or "Workouts of the Day").