During variuos types of exercise from aerobic to anaerobic all three energy systems are activated?

During exercise, the body utilizes three main energy systems: the phosphagen system, glycolytic system, and oxidative system. The phosphagen system provides immediate energy for short, high-intensity activities, while the glycolytic system supports moderate-intensity efforts lasting from about 30 seconds to 2 minutes. The oxidative system becomes dominant during prolonged, lower-intensity activities, such as aerobic exercise. Regardless of the type of exercise, all three systems work together to supply the energy needed for performance, with contributions varying based on intensity and duration.