"The circadian rhythm (means approximately a day) is critically important to our health as it has effects on our immune system, ability to fight off disease, hunger and obesity, blood pressure, and cognition. It controls our sleep wake cycle so important for brain function and body regulation."
I'll admit I find this hard to do. As my thirties approach, I've started thinking I should do this, have this by now. It's tricky to ignore and fight against what society tells you, you should have by a certain time.
Kendo (剣道 kendō?), meaning "Way of The Sword", is a modern Japanese martial art of sword-fighting descended from traditional swordsmanship (kenjutsu) which originated with the samurai class of feudal Japan. Swordsmen in Japan established schools of kenjutsu (the ancestor of kendo) which continued for centuries and which form the basis of kendo practice today.