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Bevan O'Donohue - FYF Jul 16, 2017
This workout will focus on your body's ability to sustain a hard effort for longer periods of time. There will be one 16-minute interval that goes back and forth, or criss crosses, from moderately hard to hard every 2 minutes. Stick to the exact power zones prescribed in the workout. Even if they feel easy at first, they will get harder as the interval continues.