The role of iron in oxygen transport within the body is essential as it is a key component of hemoglobin, the protein in red blood cells responsible for transporting oxygen from the lungs to tissues. Adequate iron levels are crucial for maintaining optimal oxygen-carrying capacity, which is vital for energy metabolism and physical performance. A deficiency can lead to anemia, resulting in fatigue and decreased performance. Consuming iron-rich foods, particularly from both animal (heme iron) and plant (non-heme iron) sources, is important for overall health.