It's graduation time !  After 12 to 16 weeks on an intermediate programme it's time to move up to an advanced routine.  This does not necessarily mean more time in the gym.

The main difference between Advanced Training and Intermediate Training is that in advanced training, in order to keep gaining mass (if this is your goal), the programme needs to be changed every 3 weeks.  Therefore, the sets, reps and rest periods  need to be manipulated.  

Day 1 -  Shoulders, Biceps, Triceps
Day 2 - Thighs, Hamstrings, and Calves
Day 3 - Chest, Back, Abs

Choose 2 exercises for each muscle and perform 5 sets per exercise. Keep reps between 10-15 for 3 weeks and 6-8 for the next 3 using different exercises. Rest 1 min between sets.

You may do Day 1 on Mon/Thur, Day 2 on Tue/Fri and Day 3 on Wed/Sat for maximum results with 20-30 minutes of cardio either first thing in the morning or right after the workout on Mon/Wed/Fri.

Otherwise, you can also benefit from doing Day 1 on Mon, Day 2 on Wed and Day 3 on Fri with cardio on the days off.