Jigs Built-in Muscle Mass & Body Fat Reduction Routine. As we all know, the cutting and dieting phase is the most difficult and tedious for any serious bodybuilder out there. This routine was designed for bodybuilding advanced members who want to lose body fat while maintaining and possibly increasing muscle gains. This routine should be accompanied by a clean diet of 40% Protein/40%Carbs & 20& Fats-Fish/Peanut/Flax seed. This 5 day split routine consists of Chest &Triceps-Back&Bicep (Rest 2 days then Shoulders- Leg training, (Rest 2 Days). Some Interval Running or Walking for cardio is required after strength training and may be implemented on the last rest day of each cycle to assist with the cutting/fat burning phase. The goal of this routine is to gain maximum amount of muscle while reducing body fat to 10% or less; within two 30 day cycles.