The Intensity Spectrum

Interval work around ten k to half marathon pace would be brougt roughly. Faster intervals, like a 12 times two minutes at a tree atatrun, an intensity between five k and ten k speed. You've got the most intensity at the farthest ends of the spectrum, very easy and very hard. And this whole intensity spectrum. If we back up again and we look at a pyramidal a intensity distribution, there's a lot of zone one work, easy. There's a medium amount of zone two work and a small amount of zone three work.