the new challenge is to challenge yerself with negatives, that means eccentric contraction, that means slowdowns, resisting gravity with weights or whatever you get the idea.
we are all stronger eccentrically so i challenge you all to test yerself eccentrically and concentrically to max out reps or max out weight, whatever it is that you do post it here.
remember to be safe and use a partner especially when using very heavy weights. to max out eccentrically requires that you can control, even stop but not push a weight back up. always use a partner and always use yer head when trying new things.