Back in high school, our coaches had us strap extra long chains around the bar while benching so as we were doing the eccentric portion of the exercise, part of the chain would rest on the ground making it lighter. Obviously as you lift it, you are lifting the chain up off the ground which also makes it heavier. I guess the whole point was to make it get harder and harder towards the latter part of the concentric. After looking around here, it seems this is kind of useless since it is making the eccentric part of the lift get easier and the concetric get harder. Anyone got any thoughts on this as to whether it's a good idea or not.