Today I was on the power bench getting ready to do bench press. I usually warm up with some light weight and then gradually go up. I was on my first warm up set, using dumbells when this guy puts a 45 on each end of the bar and says "You can work in with me if you want." So I got up and refused to work in with him. I guess this guy thinks becuase I was using light weight at the time, that he had the authority to take the bench? I just let it go, it was some older guy in his 40's.