May 31, 2021


Interviewer: You might not have realized this, but a healthy heart actually requires less exercise than you might think. Cardiologist Dr. John Ryan, how much how much activity do I need to keep my heart healthy?

Dr. Ryan: So in reality about 30 minutes of exercise, five days a week, something that gets your heart rate up. The important thing is this 30 minutes doesn't all need to be at once. You can do it in two 15-minute intervals, three 10-minute intervals, etc. Something like a brisk walk, cycling on a stationary bike, jogging, etc. It will be sufficient.

Interviewer: I've heard it defined as moderate activity is all you really need. So you don't need to go really overexert yourself, but how can I tell if I'm in that moderate activity zone?

Dr. Ryan: Some people base it on how easily they can talk, and they can talk, and they can talk comfortably, but if they were asked to sing, they wouldn't be able to.

Interviewer: And just that little bit, 30 minutes a day really makes a difference?

Dr. Ryan: Yeah. It definitely decreases your risk. Doing more than that, it's unclear how much of an added of benefit that has.

updated: May 31, 2021
originally published: September 21, 2019

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