What causes resting heart rates to increase?

There are several factors that can cause resting heart rates to increase. Here are some common causes:

1. Age: Resting heart rates tend to increase with age. This is because the heart's ability to pump blood effectively decreases as we get older.

2. Physical activity: Regular physical activity can lead to a lower resting heart rate. However, immediately after exercise, your heart rate will be elevated.

3. Stress: Stress can cause a temporary increase in heart rate.

4. Caffeine: Caffeine is a stimulant that can increase heart rate.

5. Nicotine: Nicotine is a stimulant that can increase heart rate.

6. Alcohol: Alcohol can cause a temporary increase in heart rate.

7. Medications: Some medications, such as decongestants and thyroid medications, can increase heart rate.

8. Medical conditions: Certain medical conditions, such as anemia, fever, hyperthyroidism, and dehydration, can lead to an elevated resting heart rate.

If you have a resting heart rate that is consistently above 100 beats per minute or have concerns about your heart rate, it is important to talk to your doctor to determine the cause and get appropriate treatment.