👉 A runner's heart pumps relentlessly, forcing oxygen-rich blood into muscles where it's stored in red blood cells for energy. Simultaneously, white blood cells surge out swiftly to fight infections and repair damaged tissue.
👉 A runner's heart pumps relentlessly, forcing oxygen-rich blood into muscles where it's stored in red blood cells for energy. Simultaneously, white blood cells surge out swiftly to fight infections and repair damaged tissue.
https://goldloadingpage.com/word-dictionary/muscles blood cells
