It doesn't sound right to me, BUT I am NOT qualified to tell you it is wrong.

I can ask questions, and tell you what my coach tells me, what I have read (Dempsey, Haislett, Frazier, etc), or what works for me.

The main reason I hear for not sending weight forward is that you run into counter-punches or you can't move freely until you put that weight back into the rear leg.

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HerbM