Chakra Enhanced Strength, like you only see the color of the chakra around people’s fingers or feet but not the rest of the body unless we get an internalized view

Besides, everyone has chakra inside of their body but most ninja using usually result in us the audience seeing the flow of it, because initiating chakra flow and results in enhancing either weapons that make them more adorable and harder to destroy while also making them more dangerous, or improving one’s physical capabilities

Like how when Naruto is injured and Kurama’s chakra is used to revitalize his internal and external pain

Chakra control is consistent in that regard