Ah, so you practice Kyudo to train both body and mind? While I can see how it may require both a tempered mind and body, I do not see much of a challenge behind it.

Kendo is more than just two men beating each other with swords, as I believe you see it. You must anticipate your opponents movements, come up with an appropriate counterattack, and strike without hesitation the moment an opportunity arises.

As you can see, Kendo is as much a battle of wits as it is strength.