What "lactate thingy", he mentiones nothing about lactate and its endocrionological effects on testosterone or other hormones and lactate production is not the main point of the program.
I do get the TUT point, but 2 seconds up, that is just weird. I don't lift my schoolbag with a certain tempo, I just lift it and that feels natural. The same should go for the at least concentric portion of the movement. But Charles is the man, who I am to agree. Just noticed in his recent writings he suggest 1 second up or explosive.
Dez, just google for German Volume Training and the original Charles articiles will pop-up everywhere