I do not understand the topic very well, so the question itself could be incorrectly formed, so sorry about that :). According to Lawrence Krauss, atoms containing in our body consists of merely 10% (if I remember correctly) of our total mass. The rest come from virtual particles popping in and out of existence from empty space. So if ~90% of our mass comes from virtual particles, and virtual particles have negative mass, shouldn't virtual particles mass be subtracted to ours? In other words, why we aren't getting lighter due to the effect of those particles?
Thanks