tried and true warm-up routine
I never really had a consistent warm-up routine until I struggled to come back to the sport of lifting after a lower-back injury. Had I properly warmed up prior to lifting each session, I might not have suffered the injury in the first place. I treat warm-up routines as a method of injury prevention and will not start the warm-up sets with a barbell until I feel completely warm and ready to lift - both physically and mentally.
This article outlines my 10-15 minute warm-up routine that I like to perform before any of my compound lifts (squat, bench, press, deadlift). There are some slight variations depending on the movement I am performing, but at the heart of the routine are four key movements.