He created the Bristol Stool Scale, google, Bristol Stool Scale
for more details.
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Your Poop Needs To Be In An S Shape. That Means Your Healthy. Now I Know You Are Wonderin How Is That Possible But What I Mean Is That Is Does Not Need To Be Hard And In Little Balls. Gross Huh? But Its True.
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Use the Bristol Stool Chart.
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Depends on your diet and digestive health. I believe a #3 or #4
on the Bristol Stool Scale (yes, such a thing really exists) is
what's considered "ideal".
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The chart is used to evaluate the defecation type and
ability.