Fitness
Polarized 80/20 Running
Polarized 80/20 running keeps about 80 percent easy and 20 percent hard—reducing junk middle intensity that blunts aerobic gains for many amateurs.
Polarized 80/20 running distributes roughly 80 percent of volume at easy zone-1–2 effort and 20 percent at high intensity, minimizing gray zone three that many amateurs overuse. Easy must stay truly easy; hard days stay sparse and sharp.
It suits aerobic base with limited weekly stress.
Common questions
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Is 80/20 exact or approximate?
It is a guide—monitor time in zones, not feelings. If every run feels moderately hard, you are likely in zone three, not polarized.
Related terms
Put Polarized 80/20 Running into practice
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