My pleasure, MC.
Musclemuscle, I'm not sitting on this damn forum all day and night, so don't act all high and mighty when I don't come within five minutes to make any retort.
Tell me, what is a picture going to prove? Not a damn thing. Argue otherwise all you want, but it's idiotic to say it would showcase my level of knowledge.
Oh, and I'm not 5'7, 123.
Please lord, don't tell me you're trying to act tough on an internet disucssion forum. Are you?
You "PACK"? Hahaha wow I feel like I'm still in highschool. Go ahead, skin my ass raw.
Genetics aren't going to cause people to differ so much that they're going to magically "shock" their biceps and grow immensely from a round of 21's or dropsets or any such thing. It might all sound good, but the fact is, there are actual physiological reasons the muscle grows. 21's and drop sets are simply a waste of energy. You certainly won't gain anything from shooting for an intense burn, aside from a long bout of DOMs.
Please, go read up on the HST forums a bit. They actually have a wealth of information there that would be useful to you. Then again, I'm sure you're incapable of understanding half of what's posted there
anyway.
I don't think there's any rationale between 21's. The first thing that comes to mind is that three and seven are often viewed as "lucky numbers" in a deal of societies. Twenty-one, being a multiple of seven, seems like the type've thing some superstitious jackass would cook up just to get everyone excited, thinking it's some magical number. Of course, once our body is signalled that the twenty-first repition is hit, it will release an immense amount of GH and your body will spasm, as all the nutrients present in your system are absorbed straight into the biceps, causing a ginormous amount of muscle tissue to form, giving one BULGING BICEPS!!!!