That is atoms, which are attracted to each other in the very same way that planets are to the sun, or the sun to other solar systems, galaxies, etc. Given also that we know we shed tiny 'flakes' continually, which is the reason that sniffer dogs can track us for hours after we have passed by, this means that we, our outer being is not a finite entity, at least not in the same way as say a metallic object is. We are not finite then. If this is the case then we could say that we are continually 'interchanging' cells with our environment, and this exchange results in a kind of dynamic with the universe. I'm still not sure, and truthfully don't know, how the energy system works when we are alive.
Some people have very pure faith and live their lives in a reflection of that faith.
As long as they are not hacking their neighbours into pieces in defence of this 'faith', and they have some compassion for other beings, then it seems to me that any faith can be a true faith. For me, Buddhism works because I can see that it works. I know that when I chant and meditate sincerely I have immediate tangible effects in my daily life. I always had a problem with Catholicism, but of course that's not the same thing as being critical of other people who have faith in this practice. You do and I respect that.