it is important if your safe in sport or you could injury yourself or someone else who is taking part in the same sport as you. Different sports have different rules and things to do to keep safe example: in football you should wear shinpads and anything to keep you from preventing getting injured. You also should wear the correct footwear from preventing injury to any one who your against.
In any sport you should watch the health and safety of your self and those around you, if your safe then you will have a fun game no matter what your doing. In sport you should follow all the rules and waht you can and cant do.