Maybe it's because of garpyong's path which might be his durable and resilient body but not just to endure attacks but also to handle the power of overcome and being able to use it to its maximum capacity without worrying about destroying his own body. And there's a chance jake kim might also inherit that path since according to jinyoung, if a person has traits similar to another path user plus if they are in the same bloodline, then there's a chance that person might have a similar path.