The expected resting heart rate (when not exercising) for a healthy child is between 80 and 90 beats per minute, for a healthy adult female approximately 75 beats per minute, and for a healthy adult male an approximate figure of 70 beats per minute.THE GENIUS · 6 years ago.he expected resting heart rate (when not exercising) for a healthy child is between 80 and 90 beats per minute, for a healthy adult female approximately 75 beats per minute, and for a healthy adult male an approximate figure of 70 beats per minute. THE GENIUS · 6 years ago.