What are the advantages of using SPD pedals over flat pedals for mountain biking?

SPD pedals offer better power transfer, efficiency, and control compared to flat pedals for Mountain Biking. They allow for a more secure connection between the rider's foot and the pedal, which can improve pedaling efficiency and overall performance on challenging terrain. Additionally, SPD pedals provide a more stable platform for the foot, reducing the risk of slipping off the pedal during technical maneuvers.