I heard that years ago the whole world use to tune differently. After a meeting in london in 1939, most countries accepted 440hz as standard tuning, so we can communicate. So theres a conspiracy theory that 440 was made on purpose , is not a natural tuning, meaning that it hurts our brain unconsciously in many ways, etc.. I been tuning to 444hz for like a month. and i can say that i feel better, more energetic, less stress. I thought it was bull, but i guess not. Or maybe is all mental. But who cares i feel better lol. Im not saying you should tune 444hz. Just give it a try. And if you do, your not gonna feel a difference right away, give it time. You could give a try to 432 too. Its more popular than 444hz. But i didnt like it that much i felt sad and sleepy lol. Another theory haha, 432 is getting popular to mask the truth of 444hz. But who knows, find wants more comfortable for you. Some will say, its just an alternate tuning. No its not. Eb, drop d etc.. Are alternate tunings for 440hz. If two musicians want to jam, but one is on 444 and the other on 440, They cant. Now, if both are in the 440 but one is Eb or whatever, yes they can. If your gonna put something on this post. Please be polite. Theres google if you want a better explanation. Thanks Any of you guys tune differently?