Iron is the vital mineral responsible for oxygen transport in the body. It is a key component of hemoglobin, the protein in red blood cells that binds oxygen and delivers it to tissues. Adequate iron levels are essential for maintaining energy levels and overall health, particularly for athletes and individuals engaging in strenuous physical activity. A deficiency can lead to anemia, fatigue, and decreased athletic performance. To support optimal iron levels, it's important to consume iron-rich foods, such as red meat, legumes, and leafy greens.