Why progression slows as you get stronger
Untrained lifters can often add load almost every session because the early gains come quickly, driven heavily by the nervous system learning the movement. As training age increases, the rate of adaptation slows, so intermediates typically progress over a week and advanced lifters over a training block or cycle rather than session to session.
This is the logic behind progression models that lengthen the loading window with experience. A program that tries to add weight every workout for an advanced lifter usually stalls, because adaptation no longer arrives fast enough to support it.
From linear progression to periodized cycles
Beginners often thrive on simple linear progression. Intermediates may need weekly undulation or planned variation, and advanced athletes commonly use periodized cycles that manage fatigue across weeks while still nudging strength upward. The transitions between these stages are gradual and individual, not sharp lines tied to a number of months.
These are general training-science principles rather than an individual plan. Appropriate progression depends on recovery, technique, and goals, ideally guided by a qualified coach.