Why is it important to avoid sudden turns on sand or gravel?

Avoiding sudden turns on sand or gravel is crucial because these surfaces can significantly reduce traction. When a motorcycle encounters loose materials like sand or gravel, the tires struggle to maintain grip. Sudden movements, such as sharp turns, can lead to a loss of control as the bike may skid or slide, increasing the risk of an accident. Maintaining smooth, gradual movements helps ensure stability and allows the rider to better manage the bike's balance on unstable surfaces. This principle is essential for safe riding, particularly in conditions where traction is compromised.