Sleep
HRV Suppression Pre Illness
HRV suppression pre illness is multi-day HRV below your band before symptoms—cluster with temperature and respiratory rises before you push planned intervals.
HRV suppression pre illness is a multi-day drop in heart rate variability below your normal band before cough or fever arrives—autonomic stress from incoming infection or hidden overreach. Training load, alcohol, and poor sleep also suppress HRV, so read alongside resting HR and respiratory rate.
Three suppressed mornings with rising temperature deviation means easy week, not prove-it intervals. Single dips after late wine differ.
Common questions
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How long does pre-illness HRV suppression last?
Often two to five days before symptoms peak for viral illness, but training and alcohol can mimic the pattern. Multi-metric clusters beat guessing from HRV alone.
Related terms
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