I played around with this and killed some of my batteries. I don't care about it anymore. I'm cured
I found that discharging them that hard, they don't discharge evenly and one cell can dip too low and damage it. If you want to do that, which probably only the high level processionals and battery wizzards are going. I would get their setup and learn their tricks. I have an Icharger 308 Duo and I can cycle batteries, and I do see a drop in internal resistance. I'm also a very good driver, but I don't see or feel much of a difference on the track. Not enough of a difference that I feel I need to work my packs over before I run them.