Stress is a state of worry or mental tension caused by a difficult situation.

Our body responds physically and emotionally. Heart racing, palms sweating, shoulders tensing up, shock, fear, anxiety, and anger.

First, let your breath flow as deep down into your belly as is comfortable without forcing it. Try breathing in through your nose and out through your mouth. Breathe gently and regularly. Deliberately copying a relaxed breathing pattern seems to be able to calm the nervous system down that controls the body's involuntary functions.

It originated thousands of years before the dawn of the Roman Empire, people believe that breathing exercises were incorporated into exercise and relaxation routines.

Let your breath flow as deep down into your belly as is comfortable without forcing it, try breathing in through your nose and out through your mouth, breathe in gently and regularly, then let it flow out gently counting from 1 to 5 again.

Ideally you should be practicing breathing exercises from about 5 to 10 minutes a day.

https://nida.nih.gov/sites/default/files/NIDA_YR19_INS3_DownloadAll.pdf

https://www.betterhealth.vic.gov.au/health/healthyliving/breathing-to-reduce-stress#:~:text=Relaxation%20response,-When%20a%20person&text=Deliberately%20copying%20a%20relaxed%20breathing,stress%20hormones%20in%20the%20blood

https://www.goodtherapy.org/learn-about-therapy/types/breathwork#:~:text=Breathwork%20has%20roots%20in%20Eastern,were%20formed%20during%20this%20era.