Calorie Deficit
Definition: Consuming fewer calories than your body burns (TDEE), forcing it to use stored energy (fat) for fuel. A deficit of 500 calories/day results in approximately 0.5kg of fat loss per week.
Why It Matters
Understanding calorie deficit 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 calorie deficit principles to your training program, so you don't need to be an exercise scientist to benefit from evidence-based programming.