This one goes out to all the "old school" types who lift just to put up the big numbers and pay no mind to the form or quality of the movement. Ladies and gentlemen (more so the gentlemen), I realize putting up a large amount of weight on a squat, bench press, or bicep curl feels good and makes one feel accomplished, but without the proper form attached to those large numbers, you will eventually have to deal with the injuries that come with piss poor mechanics.

People will often rush through a progression and bump their numbers up on a lift just for the sake of putting up a few extra pounds, sacrificing proper movement mechanics. This creates compensations in the body and trains the brain to move the body with faulty movement patterns. After a while, these poor movement patterns cause asymmetries (imbalances in the body) that will eventually lead to injury.

Don't put the cart before the horse people! Take your time and don't rush. Nail down the proper form and movement pattern before raising the load that you're lifting. Your muscles, connective tissue and joints will thank you. After all, we lift weights and stay in good shape in order to enjoy an active lifestyle  outside of the gym. They are tools we use to balance out our lives, whether they be sedentary, repetitive, stressful or all of the above. Minding proper form will allow for greater strength gains in the future and prevent injury as well.  Putting up 10 or 20 more pounds before your body is ready isn't worth shoulder or back surgery.