First it was Microsoft cofounder Bill Gates, who got the Internet all fired up when he answered questions in a Reddit AskMeAnything thread. I am in the camp that is concerned about super intelligence, Gates wrote in response to a question about the existential threat posed by artificial intelligence (AI). First, the machines will do a lot of jobs for us and not be super intelligent.
A normal heart rate is between 60-100 beats per minute at rest (sitting, relaxing, etc.). It is well-known that the average resting heart rate for well-trained athletes is 40-60 beats per minute! However, this rate can change dramatically while sleeping or with daily activity and exercise.
It can be compared to the idling of a vehicle. The average heart rate in adults ranges from 65 to 80 beats per minute (bpm). Whereas, the normal resting heart rate for adults can be anywhere between 60 to 70 bpm. There is immense relevance of optimal resting heart rate.