Which do you think would work better for size gains.
#1
Day 1 - Chest and Triceps
Day 2 - Shoulders and Legs
Day 3 - Back and Biceps
Day 4 - Rest
Day 5 - Rest
Day 6-Chest and triceps
Day 7 Shoulders and Legs
Day 8 Back and Biceps
OR
#2
Day 1 - Chest and Triceps
Day 2 - Shoulders and Legs
Day 3 - Rest
Day 4 - Back and Biceps
Day 5 Chest and Triceps
Day 6 Rest
Day 7 Shoulders and Legs
Day 8 Rest
Of the two training splits which in your opinion would be better for gaining muscle size? Im leaning toward the first one, but would like to hear some experts on the subject.