Run most miles at conversational easy pace

What to Do

Keep 80% of your running at an easy, conversational pace where you could comfortably hold a conversation. This feels embarrassingly slow to most beginners — that's normal and correct.

Why It Works

The 80/20 principle, popularized by Matt Fitzgerald and backed by research on elite endurance athletes, shows that spending ~80% of training at low intensity and ~20% at moderate-to-high intensity produces the best results. A 2023 Journal of Sports Science & Medicine study found polarized training was more effective than HIIT or threshold training for improving VO2 max and time to exhaustion.

Tips

• The "talk test" is the simplest way to gauge easy pace — no gadgets needed
• Most beginners run too fast on easy days, which delays adaptation and increases injury risk
• Easy pace for beginners may require walk breaks to keep heart rate down — that's perfectly fine
• It feels slow now, but easy running builds the aerobic base that makes you faster later