Table of contents : 1) Theory of hypertrophy development 1.1) Physiology of the muscle 1.2) Biochemistry 1.3) Energy systems 2) Mechanisms of hypertrophy 2.1) Mechanical tension 2.2) Metabolic stress 2.3) Muscle damage 3) Training variables 3.1) Volume 3.2) Frequency 3.3) Load (Intensity) 3.4) Type of exercises 3.5) Progression 3.6) Time Under Tension 3.7) Rest 3.8) Training techniques 4) Programs for hypertrophy 4.0) Main muscle groups 4.1) Exercises 4.2) Periodization 4.3) Break-in phase 8 weeks 4.4) Strength phase 8 weeks 4.5) Metabolic phase 4 weeks 4.6) Hypertrophy phase 12 weeks 4.7) Aerobic activity 5) Nutrition and body recomposition 6) Motivation 7) Measurements 8) How to use measurements for body recomposition