Viscoelastic or Viscoplastic Glucose Theory (VGT #101): Applying the Concept of Elasticity, Plasticity, Viscoelasticity, Viscoplasticity, Wave Theory and Frequency-Domain Analysis to Conduct a “Glucose Analogy” Study and Illustrate Certain Biophysical Characteristics and Behaviors of Postprandial Plasma Glucose (PPG) Using Collected Data of 4,525 Elastic Glucoses (180 mg/dL) Within a Period of 4+ Years from 5/8/2018 to 6/18/2022 Based on GH-Method: Math-Physical Medicine (No. 691)