How should a helmet fit on your head?

A properly fitting helmet is crucial for effective protection during activities that pose a risk of head injury. A helmet should fit snugly on the head, meaning it should not move around or easily shift when you shake your head. This snugness helps ensure that in the event of a fall or impact, the helmet can adequately absorb and distribute the force, reducing the risk of injury.

It's also important for the helmet to be adjusted so that there are no gaps between the helmet and the head, which would allow potential impact forces to reach the skull. A good fit implies that the helmet will remain securely in place during movement, providing consistent protection.

While it may be comfortable to have a loose helmet, this can lead to dangerous situations where the helmet does not perform as intended. Additionally, having it only cover the top of the head neglects the protection needed for the sides and back. Space for headphones is also not a defining factor for safety, as the primary concern is maximizing the protective qualities of the helmet itself.