1RM (One Rep Max)
Definition: The maximum amount of weight you can lift for a single repetition with proper form. It's used to calculate training percentages and track strength progress. The Epley formula estimates it: 1RM = Weight × (1 + Reps/30).
Why It Matters
Understanding 1rm (one rep max) 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 1rm (one rep max) principles to your training program, so you don't need to be an exercise scientist to benefit from evidence-based programming.