Kettlebells don’t just isolate one muscle or even one set of muscles, they really do target your whole posterior chain which is the network of muscles that extend all the way up the backside of your body from your calves to your hamstrings, buttocks and into your lower back. They require your hips and legs to generate the force and momentum of the swing while your entire core including your abs, back, and shoulder girdle are called upon to stabilize your body and control your balance and posture. Basically, pretty much everything! That’s why they are so darned effective!\r