Struggling with zone 3 | 80/20 Endurance

Struggling with zone 3

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  • #16223
    SallyH
    Participant

    I am following the triathlon maintenance plan using heart rate for my zones and for the last couple of weeks I have been struggling to get into zone 3 when doing cycling intervals. I can feel the burn in my thighs and cannot increase the pace and maintain it for the required time. I end up riding zone 3 intervals in zone X. It feels like my lactate threshold heart rate has decreased. What is going on and what can I do? Thanks

    #16225
    Matt Fitzgerald
    Keymaster

    That’s often and indication that you are overtrained/under-rested.

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