Sport Riddle

You can practise this sport the whole year.
You can practise it inside and outside.
This sport develops body strength and balance.
There are people who start practising this sport when they are very young but you can practise this sport at any age.
For this sport you need to concentrate a lot and you practise your mental strenght.
In many action movies they practise this sport.
This sport is a material art.
This sport comes originally from Japan.
When you practise this sport you wear a kimono.
The name of this sport has 6 letters.