Your gut has been optimized over billions of years of evolution to work.  A much more likely difference is how jittery some people are.<p>Sure, if A and B sit still for 8 hours there is no difference.  But, many people are constantly in motion.<p><a href="http:&#x2F;&#x2F;www.dailymail.co.uk&#x2F;femail&#x2F;article-2163173&#x2F;Toddlers-daily-antics-equivalent-doing-83-rounds-boxing-ring.html" rel="nofollow">http:&#x2F;&#x2F;www.dailymail.co.uk&#x2F;femail&#x2F;article-2163173&#x2F;Toddlers-d...</a>