yeah, i know you say it is muscle. The PROBLEM with that is:
1. No physical evidence
2. There are muscles thoughout the body. Only problem here is - no muscle exists in this spot, between pectoral muscles.
Heh! I must say that you are certainly showing your lack of anatomical knowledge. I'm still laughing at how you mistook the word physiological for philosophical early on. It's pretty bad to not know the difference.
There's very strong evidence throughout your whole posting in this thread that you just aren't up to the task of understanding what's been presented to you in it. Sorry. You should find a totally different subject to delve into - one that you at least know something about.