During which type of exercise does fat oxidation primarily occur?

Fat oxidation primarily occurs during low-intensity, long-duration exercise due to the body's energy utilization patterns. At lower intensities, the body has a sufficient supply of oxygen, allowing for the mobilization and use of fat as a primary fuel source. This is because fat metabolism is more oxygen-dependent compared to carbohydrate metabolism, which dominates during high-intensity activities.

In addition, during prolonged exercise, the body's glycogen stores become depleted, and there is an increased reliance on fat oxidation for energy. This adaptation is crucial for endurance performance, as it allows athletes to preserve carbohydrate stores for more intense efforts and ultimately sustain activity for extended periods.

Low-intensity, long-duration exercise is characterized by a pace where individuals can maintain a conversation, which generally corresponds to heart rates that favor fat oxidation. Thus, your choice accurately reflects the type of exercise where fat oxidation is most prominent.