Track Everything or Train Blind

Memory is unreliable across weeks. By Saturday, you will not remember whether you squatted one hundred kilograms for five reps last Tuesday or last month. Without that information, you cannot increase the demand. Without the increase in demand, you cannot grow.

The tool does not matter. A notebook, a notes app, a dedicated training app, all work, provided you actually log every working set with weight, reps, and a brief note on how it felt. Add an RPE score if you are using one. Mark form notes when something needs attention next time.

Review the log weekly. Look for sets where you can add weight, sets where you can add a rep, sets where rest periods can shorten. The trainees who keep written logs progress measurably faster than the ones who do not, and the gap widens every year.