Fitness
Polarized Base Phase Cycling
Polarized base phase cycling keeps about eighty percent easy and twenty percent truly hard—avoid chronic middle tempo that feels productive but stalls aerobic gains.
Polarized base phase cycling keeps roughly eighty percent of session time easy—zone one to low zone two—and twenty percent truly hard, avoiding chronic middle tempo that feels productive but stalls aerobic gains. Base blocks still skew easy; the hard twenty percent might be short neuromuscular sprints or one weekly VO2 touch, not daily threshold grinding.
Three-zone models simplify planning. Monitor time-in-zone, not just average power.
Common questions
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Is polarized training good during base phase?
Yes—most time stays easy with a small hard fraction. Avoid living in middle tempo during base; it often feels hard enough to fatigue without building top or bottom.
Related terms
Put Polarized Base Phase Cycling into practice
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