Fitness Question:

YES! The muscles should be work from largest to smallest. If you already have enough size in most of the large muscles then work your weakest body part first. The muscles should be worked in this order: quads, chest, back, hamstrings, shoulders, calves, triceps, biceps, forearms/wrists, abs.

Why? To get the most gains the large muscles have to be worked hard enough to promote growth. If, for example, you worked your triceps to failure then tried to bench press, to work the chest, your triceps would be worn out before your chest worked hard enough to grow.

Avoid working abs and then doing Squats. The abs are a very important link in doing squats, they shouldn't be tired before doing squats. If triceps are worked before the chest make sure to lower the weight when working the chest.