Why is it recommended to stay on your bike if someone runs at you?

Staying on your bike when someone runs at you is recommended primarily because you should never give up your mechanical advantage. Being on the bike provides you with greater stability and control, allowing you to maneuver effectively in response to an approaching threat. The bike enhances your ability to react quickly and gives you an elevated position, which can be psychologically intimidating to an aggressor.

Remaining on your bike also allows you to utilize its speed and mobility, facilitating a rapid escape if necessary. While maintaining a vantage point and ensuring visibility can be beneficial, the key consideration in a potentially threatening situation is to enhance your control and ability to respond, which is best achieved while you are still mounted on your bike.