Training for enduring the cold

Please join our crowdfunding project We want to develop the Nindo Online Course so that you can learn Ninjutsu without having to come to Japan LInk This time it s called Hioki no Gyo. We will learn about how to train the body to endure the cold using ice. Ninja Narashino Seiryukutsu, is the one who holds a big ice cube to train with. At first glance, this training looks cool, but it is very hard work.