UAN: 157 Article type:col--In the spring of 1971, two Finnish runners trained in the mountains around Provo, Utah. Although they trained there for only one year, Pekka Vasala and Lasse Viren became famous for their incredibly tough fartlek sessions. A little more than a year lat...
to truly know your VO2 max is to run while breathing into a tube. But to save you getting funny looks on the street, here's an estimate based on 5K times:5K VO2 Max15:00 7017:00 6020:00 5025:00 40Reach your maxRotate VVO2max workouts into your speed
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