Rep Ranges
Definition: The number of repetitions performed in a set, which determines the primary training adaptation: 1-5 reps for strength, 6-12 reps for hypertrophy (muscle size), and 12-20+ reps for muscular endurance.
Why It Matters
Understanding rep ranges is essential for making real progress in your fitness journey. Without this knowledge, you risk spinning your wheels — training hard but not seeing the results you deserve.
Callio automatically tracks and applies rep ranges principles to your training program, so you don't need to be an exercise scientist to benefit from evidence-based programming.