Intermittent fasting affects metabolism by altering the body's energy utilization and hormonal balance. During fasting periods, insulin levels drop, promoting fat oxidation as the body shifts to burning stored fat for energy. This process can lead to improved insulin sensitivity, which is beneficial for metabolic health. Intermittent fasting can also enhance the production of neurotransmitters and growth hormones, further supporting muscle maintenance. Additionally, it may induce cellular repair processes like autophagy, clearing out damaged cells and promoting overall health. However, individual responses vary and should be monitored.