Anyone who has watched the 2006 film 300 will attest, King Leonidas and his ferocious, hard-charging Spartan army have abs to die for. And even today, both male and female gym enthusiasts tend to use this film as a benchmark of fitness, especially when it comes to achieving the perfect six-pack. The good news is that you can still craft a Spartan six-pack at home using one-piece of equipment: the kettlebell.