Kettlebells are like weights with thick handles—were the weapon of choice for Russian lifters more than a century ago. They're just now getting their due in America. The weights offer all the benefits of dumbbell training, plus a few more. The super-thick handles challenge your grip, and the position of the weight in relation to the handle works your core extra hard.
Best of all, kettlebells are versatile. They're ideal for explosive exercises that work major muscles, burn body fat, and build power, but they also add a new dimension to classic moves like chest presses and flys. And you don't need a wall-length rack of them to get a great workout. One pair will suffice for this routine. Use them regularly and you'll see the body you've always wanted.
See some examples of Kettle Bell exercises at