Just try running slow. What's the worst thing that can happen?
Threshold and Zones 'How-To' Guide: [ Ссылка ]
• Strava: [ Ссылка ]
#marathon #running #runner
![](https://i.ytimg.com/vi/4YaDXw3-iws/maxresdefault.jpg)
Just try running slow. What's the worst thing that can happen?
Threshold and Zones 'How-To' Guide: [ Ссылка ]
• Strava: [ Ссылка ]
#marathon #running #runner