What is periodisation in training?
Planning training in structured phases with different goals, rather than doing the same thing indefinitely — the recognition that you cannot push hard in every direction all the time.
The underlying principle. Adaptation comes from stress followed by recovery. Training constantly at high intensity produces accumulated fatigue that masks fitness and eventually causes injury or stagnation. Periodisation manages the relationship between stress and recovery deliberately.
The structural terms:
Macrocycle — the longest planning unit, frequently a year or a competitive season.
Mesocycle — a block of weeks with a specific focus.
Microcycle — usually a week.
The main models:
Linear periodisation. Progressing from high volume and low intensity toward low volume and high intensity over months. A strength athlete might move from higher repetitions toward heavy, low-repetition work approaching a competition. Simple, well established, and criticised for letting qualities developed early decay by the end.
Undulating (non-linear) periodisation. Varying intensity and volume within a week rather than across months — a heavy day, a moderate day, a lighter day. Research comparing the two generally finds both work, with undulating sometimes edging ahead, particularly for trained individuals.
Block periodisation. Concentrated blocks each emphasising one quality, exploiting the observation that adaptations persist for a time after the block ends.
Conjugate approaches, training several qualities simultaneously with varied emphasis.
The deload is common to all of them: a planned reduction in volume or intensity, typically every few weeks, allowing accumulated fatigue to dissipate so that fitness becomes expressed. Skipping deloads is among the most common self-inflicted problems.
Who actually needs it. Beginners do not — almost any consistent training produces progress, and simple linear progression works for a long time. Periodisation matters when progress stalls, when you are managing fatigue across a long season, or when you must peak for a specific date.
The honest caveat: for recreational trainees, consistency, adequate protein, sleep and progressive overload account for far more than the sophistication of the plan.
General information, not individual coaching advice.