Workout overview

Duration: 1h

Stress points: 74

Zone distribution

Z1: 30m

Z2: 5m

Z3: 2m

Z4: 11m

Z5: 14m

Z6: -

49%
8%
3%
18%
23%
0%

Named for the atomic mass of Oxygen, this VO2max workout is designed to help you make better use of that oh-so-precious resource. The workout features two main sets. The first is a block of intervals above threshold, pushing your body to work and recover repeatedly. The second is a sustained sub-threshold effort that asks you to work hard on tired legs. You get to breathe easy - and grab some extra O2 - during the long warm up and cool down.

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