Epley Formula
Definition: A mathematical formula used to estimate your one-rep max: 1RM = Weight × (1 + Reps/30). It's the industry standard used by apps like Callio to track strength progress without dangerous maximal testing.
Why It Matters
Understanding epley formula 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 epley formula principles to your training program, so you don't need to be an exercise scientist to benefit from evidence-based programming.