Viscoelastic and Viscoplastic Glucose Theory (VGT #21): Applying the Concepts of Viscoelasticity, Viscoplasticity and Perturbation Theories to Predict Lower eAG and Higher eAG Values by Using the Overall eAG Values and their Change Rates with Corresponding Carbs/Sugar Intake Amounts as the Respective Viscosity Factors Along with Estimating Relative Energies in Time-Domain and Frequency-Domain Based on the GH-Method: Math-Physical Medicine (No. 600)