Dividing the pre-season into three, 4-week blocks of time is referred to as "periodization." Each 4-week block should begin with: An easy week, followed by a medium/hard week, followed by the hardest week.
Periodization is defined as the deliberate manipulation of training variables (loads, sets, reps) to maximize training adaptation and prevent the overtraining syndrome from occurring.
For example, for the first week, you can do 225 pounds with 8-10 reps and 3 sets of squats. Then, in week two, he switches to 265 pounds and does 4-6 reps for 3-4 sets. Finally, the last heavy week can include 300 pounds on her 2-4 reps for 3-6 sets.
The purpose of periodization is to control the application of physical stress on the body by manipulating the amount, intensity, and complexity of the exercise.
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