Source:amazon.comAmazon BasicsCast Iron Kettlebell Weigth$39.99Natalie MitchellBesides dumbbells, my kettlebell is by far one of my most-used equipment pieces. The difference between the kettlebell and the dumbbell is the handle. With this, you are able to do a variety of different exercises, such as kettlebell swings, bent-over rows, and goblet squats. Since the bulk of the weight is more compact, it makes it a lot easier to move the kettlebell compared to a dumbbell, which tends to be longer in shape. You do not need a high-weight kettlebell, and most workouts will be most effective with a medium weight, as many kettlebell exercises tend to be higher intensity. This 35-pound kettle is perfect! *Editor's note: the 25-pound option is listed due to the 35-pound option being unavailable…View more