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pediatricheartspecialists.com/heart-education/18-arrhythmia/175-bradycardia

During sleep, the heart rate can occasionally drop as low as 30-40 beats per minute. Bradycardia refers to a slow heart rate. The most common cause of his ...

www.wellandgood.com/low-resting-heart-rate-meaning

Elite Athletes Have Super-Low Resting Heart Rates, but That Doesn't Mean You Need to Shoot for 40 BPM. Kells McPhillips・December 21, 2018.

www.heartfoundation.org.nz/wellbeing/managing-risk/how-to-check-your-pulse-heart-rate

For example, if you're 40-years-old: your approximate maximum heart rate is: 220 – 40 = 180 beats per minute; 50% of your MHR is 180 X 0.5 = 90 bpm ...

www.brighamandwomens.org/patients-and-families/meals-and-nutrition/bwh-nutrition-and-wellness-hub/your-target-heart-rate

Age 40 Years · Target Heart Rate: (50-75%) 90-135 beats per minute · Ave. Maximum Heart Rate (100%): 180 ...

www.sutterhealth.org/ask-an-expert/answers/maximum-heart-rate-at-age-50

For resting heart rate, normal is defined as 60 to 100 beats per minute, but trained athletes can have resting heart rates as low as 35 to 40, which is normal ...

www.livescience.com/42081-normal-heart-rate.html

Jan 12, 2018 ... Athletes and people who are very fit can have resting heat rate of 40 bpm. A resting heart rate lower than 60 could also be the result of ...

universityhealthnews.com/daily/heart-health/low-heart-rate-dangerous

Slow heart rate can cause fainting if you're not an athlete, but it could be a ... “For a large majority of people with a heart rate in the 40s or 50s, ...

www.ncbi.nlm.nih.gov/pmc/articles/PMC7434379

Aug 18, 2020 ... We have observed fever plus relative bradycardia, i.e. an inappropriately low heart rate response to increased body temperature [] ...

medlineplus.gov/ency/article/003399.htm

Jan 16, 2021 ... Fainting or slowing of the heartbeat can result. Also, do not take the pulses on both sides of the neck at the same time. Doing so can slow the ...

kidshealth.org/en/teens/arrhythmias.html

For example, a teen or adult with a slow heart rate might begin to show symptoms when the heart rate drops below 50 beats per minute.

www.bhf.org.uk/informationsupport/how-a-healthy-heart-works/your-heart-rate

For some people such as athletes, bradycardia doesn't pose a health risk. But if you have a low heart rate and are experiencing symptoms like fainting, fatigue ...