Zen is Buddidism itself, and must start with a fist to concentrate all religious, spiritual, I think that concentration is not to feel spiritual Zen, Zen, Zen has a great relaxed and flexible.
Zen is Buddidism themselves and start fist. With meditation, spirituality, I think all religions like Zen meditation is not spiritual. Zen has a unique feel good Zen relaxation and flexibility
Zen is Buddidism itself and to the fist start with meditation, I think every religion to spirituality and meditation the spirit not Zen. Feel sense unique. Zen relaxing and flexible.