Is it normal for blood pressure to spike during exercise?
I've been checking my blood pressure before and after workouts. Before: 120/80. After 30 minutes of cardio: 160/90. My doctor said my resting BP is fine. Should I be concerned about these spikes during exercise?
Expert Answer
Dr. David Nakamura, MD — Cardiology
Yes, a temporary rise in blood pressure during exercise is completely normal and expected. When you exercise, your heart pumps more blood to supply your working muscles with oxygen, which naturally increases systolic pressure (the top number).
What's normal: During moderate cardio, systolic blood pressure typically rises to 140–180 mmHg. Going from 120 to 160 systolic after 30 minutes of cardio is within the normal range. Your diastolic pressure (bottom number) should stay roughly the same or only rise slightly — yours going to 90 is fine.
When to be concerned:
- Systolic pressure exceeding 210 mmHg during exercise
- Diastolic pressure rising above 110 mmHg
- Blood pressure not returning to baseline within 10–15 minutes of stopping
- Symptoms like chest pain, severe headache, or dizziness during exercise
An exaggerated blood pressure response to exercise (systolic above 200) can sometimes be an early predictor of future hypertension, even if your resting blood pressure is normal. If you notice this pattern, mention it to your doctor — they may want to monitor you more closely.
Bottom line: Your numbers (160/90 during cardio) are well within the expected range. Keep exercising — regular aerobic activity actually helps lower resting blood pressure over time.
This is general health information. Consult your physician for personalized advice.