My mare is a very hot horse so I found the best way to keep her relax is to make sure I'm relaxed and to make sure that I'm not pulling on her face all the time as she gets worked up but all horses are different so you just have to figure out their little quirks and each horse responds differently. Hope that helps
My pony used to be very tense all the time. I just began by being very slow and calm around her with everything I did. I also spent loads of time with her. This may sound kinda of silly but it has worked so well with my mare and our bond is so much stronger.
Stretching them down and out will make them rela