Watch with a timer would be the most useful for monitoring your heart rate
Brevity is a form of short hand thus would save much time and is needed in the medical field as it needs the use of only few words and would mean short and precise. Hope this answer would be of help.
Physical effects of anger:
The brain shunts blood away from the gut and towards the muscles, in preparation for physical exertion. Heart rate, blood pressure and respiration increase, the body temperature rises and the skin perspires. The mind is sharpened and focused.
Steps you can take to manage your own anger:
Think before you speak. ...
Once you're calm, express your concerns. ...
Get some exercise. ...
Take a timeout. ...
Identify possible solutions. ...
Stick with 'I' statements. ...
Don't hold a grudge. ...
Use humor to release tension.