myoglobin
/ˌmaɪoʊˈɡloʊbɪn/
noun
- A protein in muscle cells that stores oxygen and gives muscle tissue its red color.
- The deep red color of beef comes from myoglobin in the muscle tissue.
- Athletes have higher levels of myoglobin in their muscles, which helps them perform longer.
- Myoglobin releases oxygen to working muscles during intense exercise.