Comment by jobigoud

80+ heart rate at rest seems very high to me. Is this based on averages from present-day people? Including lots of sedentary people with hyper tension, overweight and obese people, etc. So "normal" in the statistical sense but maybe not "normal" in the physiological sense?

Athletes have much lower resting rate. So if we take feral humans from 50Ky ago their rest heart rate would have been much closer to the 60 bpm.