Sue ran: Why is running on the...

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  • 1 miles
  • 00:11 time
  • 10:50 pace
  • 129 calories
  •  
  •  
  • 0 ft climb
  • 0 max hr
  • 0 avg hr
    • Currently /5 Effort.
    effort /5
good Treadmill at the gym 1 mi 00:10:50 10:50 pace

Why is running on the treadmill so much harder than outdoors? I will never understand.