Weight lifting for explosive power..

[Jack3d]

Does anybody even know what Alex Ariza's credentials are? I'm having a lot of difficulty finding any type of certification in his name. And from watching a lot of his videos and what he does, he doesn't seem to know a whole lot and seems more like a guru/scam artist. How did he get a job coaching boxers?

I tried a multitude of exercises with 15 pound dumbells, my chest and biceps feel tense and tight and I feel like my speed has negated.

This was about 2 days ago.

Developing explosive power is not going to be accomplished w/ 15lbs dumbbells doing bicep exercises.