What is the normal range for a resting heart rate in adults?

The normal range for a resting heart rate in adults is 60 to 100 beats per minute. This range is established based on extensive research and observations of how human physiology works under resting conditions. A resting heart rate within this range indicates that the heart is functioning efficiently and that the body is receiving an adequate supply of oxygen and nutrients while at rest.

A resting heart rate below 60 beats per minute, while it can be normal for athletes or highly trained individuals, is generally considered bradycardia in other adults and may warrant further investigation. Conversely, a resting heart rate above 100 beats per minute is classified as tachycardia and can indicate underlying health issues that should be addressed. Thus, the selected answer accurately represents the widely accepted normal physiological range for resting heart rates in the adult population.