In the gym many people are concerned with LOOKING big and strong but not BEING big and strong.

Lets look at some videos of some respectable professional powerlifters with amazing physiques:

Dan Greene, a GREAT power lifter

Stan the Rhino

Examples are abundant, lets overcome the association of strong = fat.

Your physique needs to be in line with your goals. Above are two lean, very powerful world record holders in the powerlifting world.