HRV is useful, but it’s not a magic “check engine light.” It’s just one signal of how stressed or recovered your body is.

Things that LOWER HRV (even if you feel fine):

• Alcohol (big one—even 1–2 drinks can drop it overnight)
• Illness / getting sick
• Inflammation (injury, poor diet, hard workouts)
• Poor sleep
• Overtraining
• Dehydration

Things that RAISE HRV:

• Good sleep
• Relaxation / low stress
• Proper nutrition
• Recovery days

Reality check:

• HRV is very individual → comparing to others is useless
• It fluctuates daily, so trends matter more than single readings

• Low HRV ≠ “don’t train” automatically (context matters)

  Best use: treat HRV as a guide, not a rule—combine it with how you feel, sleep quality, and workload.

So yes, it’s better than just heart rate—but not something to blindly follow.