I'm not quite sure if this will help, because I am not aware what my particular triggers are as it is usually a combination although it mostly contains heat in a way. But what I do know is that if I get an overload, the best way to 'cool down' from it is going to the woods. I live next to a great are, as my house practically has the woods in the back yard, and by going there I remove the stimuli that caused the overload and go to a familliar quiet place where I can listen to the birds and observe the ants. It's my ideal place and it calmes me down every time.
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"How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?"
Sherlock Holmes in The Sign Of Four (1890), ch. 6