Also breathing methods, such as Wim Hoff
I don’t think Wim Hoff’s techniques are suitable for everybody. I was so excited after seeing him on a podcast that I bought the Dvd instantly. Next day I had to go to doctor after using one of his exercises, my asthma got so bad it was like breathing through a straw. Had to use a spray for a week to get back to normal, never used one before or after.
Maybe it’s good for healthy individuals idk