I just left the gym. Like you, I make my observations, but don't intrude. I see those who don't know the meaning or the effectiveness of a full range of motion when lifting weights. You've seen them. The ones who push, pull, raise, or lower the weight about halfway or three quarters of the way, then get up and beat on their chest like they've really done something. OK. My bad. They did do something, but then they wonder why their muscles don't stand out or become as defined as they are capable of being defined.
Let me be constructively critical. If you're one of those persons, change your way of doing in the gym. Lessen the weight a bit and starting practicing a full range of motion. More sooner than later you'll discover a more muscular and defined look--well worth the time and effort.
I learned a very good thing as a Master Fitness Trainer during my Drill Instructor days in the Army and still practice it today; slight deviations from proper execution and full range of motion takes away from the effectiveness of the exercise.
Understand. Full range of motion and proper execution of any exercise DOES NOT mean going beyond what the body or a limb is capable of or to the point of pain as to tear connective tissue, ligaments, and muscle tissue. Most importantly, be safe and find your safety point and niche as you practice and work toward that full range of motion.
Patience.
