Examining your fingertips and nails can help in ascertaining whether you are becoming hypoxic or detecting the onset of AMS: A dark, purplish coloration (cyanosis) indicates low blood oxygen levels as the blood tends towards a bluish color.
Examining your fingertips and nails can help in ascertaining whether you are becoming hypoxic or detecting the onset of AMS: A dark, purplish coloration (cyanosis) indicates low blood oxygen levels as the blood tends towards a bluish color.