This is an automatic process to relax your autonomic nervous system automatically.
4-7-8 Abdominal Breathing Exercise
Pull the air in through your nose deep into your belly as if trying to fill a balloon..
Do this for a count of four.
hold for a count of seven
allow the air too release through your mouth for a count of eight.
repeat this at least four times and you will be amazed!
This tells your brain it is time to relax and your brain will believe it.