What is the effect of riding with an incorrectly adjusted helmet?

Riding with an incorrectly adjusted helmet can significantly reduce protection and comfort, which is crucial for safety while operating a motorcycle. A helmet that does not fit properly may not stay in place during an accident, thereby failing to provide the intended level of impact protection. If the helmet is too loose, it can shift around on the rider's head, potentially exposing areas that should be protected. Additionally, an ill-fitting helmet can cause discomfort due to pressure points or movement while riding, detracting from the rider's concentration and possibly leading to distractions. Proper adjustment ensures that the helmet performs optimally, enhancing safety and overall riding experience.