Isolating certain muscles
I was working out today and i found a new way to work out and isolate different muscles in your arms. I started practicing by isolating my tricept, and what i do is curl up my arm so that the powerball is by my ear and my elbow is pointing up at an angle. So, with my right hand I would spin it Anti-clockwise, and this would put stress on my tricept, and for my bicept i rotate obviously clockwise. I applied this method to other muscles, and found that certain muscles move with each other and each has it's counterpart that twitches, for me at least, depending on which way you rotate it.
For example, when we study akis' high score video, we can see his pecks twitching ever so mysteriously, since he has his arms straight down and he rotates it clockwise. If he were to spin it the opposite way, like bjorn hjelte, somethin like that, then he would put more stress on his shoulders And we wouldn't see the twitching. For me, I have big shoulders thanks to my dad, and I tend to favor using the anti-clockwise rotation, for my right hand when I'm going for my highscore. So if you guys notice that your pecks aren't huge and wouldn't serve you well, I suggest that you try to use your shoulder muscles more. And if you didn't know how to isolate the different muslces before, now you do.