Running on a treadmill and blasting through the same reps over and over again can become monotonous. But at Knockout Bodies, the enthusiastic instructors focus on making working out fun. They help gals of all fitness levels chisel rock-solid bodies in alternative fitness classes, which range from pole dancing to kickboxing to Zumba. In pole-fitness classes, they help ladies develop core and upper-body strength as they sensually twist and turn around poles. They also lead high-energy kickboxing classes that motivate students to tone muscles as they learn basic self-defense moves to take down assailants or large stuffed animals that look like assailants without the lights on. Students burn copious calories in Zumba classes, which set easy-to-follow aerobic dance moves to infectious Latin-inspired tunes. When not leading empowering classes, the instructors open the studio for parties to celebrate birthdays or bachelorette festivities.