dude was back squatting about 135 the other day for 4-5 sets of about 12-15 reps. Nothing unusual about that except on either side of the weights he had hung massive steel chains--one on each side and lifted with them on (making a clanking noise as he did). Now I can see this adding a few pounds to the lift, but WTF does this accomplish if anything? I was tempted to ask the dude WTF??, but chickened out. ANyhone hear of this before? The chains reached to the floor if that helps. I can't see any benefit from this other than maybe some kind of stability challenge which would have been better accomplished using a Bosu ball or something.