Why is an average heart beat of a hobbit being 52 beats per minute valid?

An average heart rate of 52 beats per minute for a hobbit is considered valid if we assume hobbits have a physiology similar to humans, as they are often portrayed in literature as having human-like traits. This lower heart rate could be attributed to their generally relaxed and peaceful lifestyle, which may lead to a more efficient cardiovascular system. Additionally, if hobbits are depicted as having a larger body size or different metabolic needs, a slower heart rate might be a reasonable adaptation. Overall, this figure aligns with the fictional traits commonly ascribed to hobbits in fantasy literature.