All Goals
Grow cross-sectional area
Build Muscle
Maximize muscle protein synthesis and cross-sectional area
Overview
Hypertrophy is the growth of muscle fiber cross-sectional area. It's driven by mechanical tension above all — repeated, near-failure efforts that force the muscle to adapt by synthesizing new contractile proteins and structural material.
Body Systems
- Muscular
- Endocrine
- Metabolic
Key Metrics
- Volume Load
- TUT
- Progressive Overload
Training Principles
- Mechanical Tension
- Metabolic Stress
- Muscle Damage
- Progressive Overload
Key Adaptations
What actually changes in the body when you train for this goal.
- Increased myofibril count and size (myofibrillar hypertrophy)
- Expansion of non-contractile components (sarcoplasmic hypertrophy)
- Improved capillarization and nutrient delivery
- Anabolic hormonal responses (IGF-1, testosterone, growth hormone)
- Satellite cell activation and myonuclear addition
Programming Notes
Practical guidelines for structuring training around this goal.
- Load: 65–85% 1RM
- Reps: 6–12 (sometimes up to 20)
- Sets: 3–5 per exercise, 10–20 weekly sets per muscle group
- Rest: 60–120 seconds
- Proximity to failure: 0–3 reps in reserve