The Dirty Dozen is a staple core routine. It’s a small investment of time with a big pay off. Practice this 2-3 times per week to keep your runner body strong and flying fast.




The Dirty Dozen is a staple core routine. It’s a small investment of time with a big pay off. Practice this 2-3 times per week to keep your runner body strong and flying fast.

Original article and pictures take https://oiselle.com site







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