Amethyst

I do appreciate the offer, but we've mooostly got it under control! As for French... I took some in high school, but no thanks. I do study Japanese daily though, so we've got that in common instead. 

Stress is definitely a huge thing for me since I internalize a lot of it... it's something I'm working on too! The human body is pretty amazing that it'll go to such dramatic lengths in response to mental factors like that... so I'm glad he got better. I think the worst of it is also over for me, but thanks for the reminder. ^^

You and me both, my friend. A good tip for you that helps him, as he is like a male version of you in the stress internalization part. He tends to be a loving, sweet, loyal, but private man who deals with things on his own. He plays a game called Love Live School Idol Festival, in both Japanese and English as well as FATE/Grand Order. These games have done wonders for de-stressing his body and mind. I urge you to try one of them, or maybe even Idolm@ster Cinderella Girls Starlight Stage. One question for you, Ame-sama, was his body, as I suspect, trying to force him to calm down and he did not listen? You are most welcome. You mean a ton to me, and honestly, I bet more people here than you realize have been helped by you. Your aura is very soothing. While the site was updating, I got very stressed due to my right leg being slightly swollen to the point I was barely able to walk, so I thought to myself about your advice on remaining calm, and it helped me immensely.

I'm a bit familiar with Grand Order since a lot of my friends played it, but I think I want to start with F/SN before breaking into those. As for the idol games-- I'm not opposed to trying them sometime. What platforms are those for?

Regardless, I think everyone has different things that ground them. For him it might be those games, which is awesome. For me, I think drawing and spriting does better... but it's all good.

I don't think you have the wrong idea about his body, but it's probably not that cut and dry. The field of study that focuses on the connection of the mind and body is called psychosomatics. You might be able to do some searching on the matter on your own, but the field is lacking in concrete research right now. Some of its results are pretty incredulous in that they do not make scientific sense when examined through a neurological or biological lens... and yet the results speak for themselves. Maybe it's magic. I don't really know. But I think you are right to understand that there was at least some connection there for him. 

If I was able to help, then I'm very glad. But credit for being able to do that goes to you, because many people would not choose to. You work your own magic in that regard!