This workout is for the more advanced crowd– or those who are ready to increase their heart rates and encourage muscle burn! This fat loss routine is based on the theory behind Spartacus Workouts that feature metabolic circuits, meaning that this workout is a fast-paced workout routine that combines weight lifting and cardiovascular exercises simultaneously, boosting metabolism for up to 48 hours. That’s what makes this workout so efficient! This protocol is a proven fat loss technique. Fat burning techniques this efficient are definitely worth trading in your treadmill or old boring weight lifting routine for.