Linear Elastic Glucose Theory (LEGT #40) & Viscoelastic or Viscoplastic Glucose Theory (VGT #76): Comparing the Results from Using LEGT Prediction Tool versus VGT Energy Tool to Study Postprandial Plasma Glucose (Symptom) versus Fasting Plasma Glucose, Carbohydrates & Sugar Intake Amounts, and Post-Meal Walking Steps (Causes) Based on GH-method: Math-Physical Medicine (No. 666)