Everyone I talk to says the same about treadmill running, that is, that it feels so much harder and longer to cover the same distance. If you feel like that too, here’s some insight to assure you that it’s not all in your head!
“The way the treadmill belt propels you forward means you use less of your hamstring muscles. Your quads do most of your legwork instead, meaning you’re working them a bit harder than if you were outside. Perhaps this change is enough to mess with your natural running gait and make your effort seem harder.”
Read full article by Katharine Lackey for Women’s Running:
https://www.womensrunning.com/training/road/why-does-treadmill-running-feel-harder-than-outside/
