Studies reveal that such enduring and extreme running on mountains also bring the health benefits such as low energy costs for those runners. Although there are individual differences, those frequent mountain running could develop much slower energy cost system that could be 14% lower than average individuals. As a type of mountain race, sky running could allow for the strong development in the physical competence, like the prolonged running time, faster speed, and other competitive aspects that will allow an individual to improve their ability in cope with dangers and get survival in some extreme situations. The most important changes in the physical status for different types of mountain runners, including sky runners, is the heart rates. Runners intend to develop stronger physical system with the heart rate stable enough to cope with the extreme situations. that could extend runners’ adaptation to the competition intensity of the races. Heart can be strengthened with improvement in cardiac biomarkers, electro- and echocardiography. Another discovery is that skyrunning will challenge people's physical status for long duration and distance and professional skyrunners usually develop low body mass index and low body fat. Although there are gender differences in the improvement in physical status with women is less strong than male in those indexes, the gender differences are narrowing for those men and women who have participated in those long-distance or long-duration activity.
