
The one arm kettlebell bench press is a variation of the one arm dumbbell bench press and an exercise used to strengthen the muscles of the chest.
The one arm kettlebell bench press provides all sorts of unique challenges for the pecs and core. The unilateral nature of the exercise forces one to use their core to stabilize their body as they move the weight.
The unique thing about kettlebells is the weight lies lower than the handle you hold. This forces you to battle gravity more so than using a dumbbell, where the weight is in line with the handle.