OK, this might not make me very popular, but there is something you might try. Though it will only work if you have a notion, before you explode, that you are feeling tense. If not, then this isn't going to help at all.
Basically, some people, especially, when their bodoes are going through enormous changes, use up a whole lot of energy. So, carry a few cubes of sugar with you and suck one when you feel particularly tense.
At the very worst, it won't make any difference.
If you have a weight problem, then you may think this is bad advice for you. However, I am pretty certain that, with the ocasional cube, only when you need it, won't make a whole lot of difference.