Tracking only your "top set" throws away most of the story. Here is what the boring middle sets are trying to tell you.
A lot of lifters log their heaviest set and call it a day. It feels efficient. It is also how you lose the plot. The sets you skip recording are where fatigue, consistency and real progress actually show up.
Total work — sets times reps times weight — is the number most tightly tied to getting bigger and stronger. Log only the top set and you are blind to whether your volume is climbing, flat, or quietly falling off a cliff because you keep cutting the last set short.
The set you did not bother to write down is usually the one that explains the plateau.
When set three drops from eight reps to five week after week, that is your body telling you something — under-recovery, too much volume, or a program that needs a deload. You only catch that pattern if every set is on the page.
Logging every set only pays off if it takes two seconds. Get that right and the full picture becomes free.