The 5 Day Muscle Mass Split When performing each exercise and move up a set, you will do more weight and less repetitions to build both size and strength. Adding more weight will help build the muscles and make them fuller. Monday : - This day focuses on targeting the chest and back muscles through the use of push and pulling mechanics. Tuesday : - On Tuesday you will work the leg and abs through compound movements to build larger size and fuller muscles. Wednesday : - Arms days are important on building size and strength through explosive moments and heavy weight. Thursday : - Rest day to prepare for weekend of heavy shoulders/back/chest/arms Friday : - It is important to target and focus upon the back and shoulder muscles twice a week as the back is a crucial body part to give you that fuller and bulk look. Saturday : - Saturdays are used to re-target the chest and legs through compound movements along with adding in workouts that help boost strength, endurance and stamina. Sunday : - Rest This routine is split between 5 days and performed for 5 weeks, each week testing the limits to how much you are able to push yourself to reach new 1RM's. The main focus is upon bulking and lifting heavier weight for 3 to 4 sets while performing less repetitions with each set. You can also set this routine to either a Day of the Week type of routine or Numerical Day based.