The resting heart rate, measured in beats per minute while at rest, serves as a crucial indicator of cardiovascular health, according to Dr. Vassily Eliopoulos, a longevity expert trained at Cornell University. He explains that while a normal resting heart rate ranges from 60 to 100 bpm, this broad spectrum can obscure health insights. Ideally, high-performing adults should aim for a resting heart rate between 45 and 60 bpm. Research indicates that a resting heart rate exceeding 80 bpm correlates with a significantly higher risk of cardiovascular mortality, even among individuals without diagnosed heart conditions. Dr. Eliopoulos notes that spikes in resting heart rate can signal mitochondrial inefficiency, which may lead to fatigue and accelerated aging. Common factors contributing to a chronically elevated resting heart rate include poor sleep, chronic stress, and dehydration. To improve resting heart rate, he recommends engaging in Zone 2 cardio, optimizing sleep quality, and managing stress.