Beginning of this year I made a promise that I would cut caffeine out of my diet. Was successful in doing so and replaced it with tea. It has improved my life dramatically. Less anxiety, and more calm in my life. TIFU by giving coffee a shot , went cold turkey and asked for three (3!) espresso shots. Very bad idea. I felt weird all around my body, cold shivers. Hours later I started to get hyper sensitive and got even more cold. I was convinced I was about to have a heart attack. I had to walk away from my job and do breathing exercises. Barely helped, so I decided to power through it. Went on like this for an hour, it finally went down a bit, both the anxiety and cold shivers and hype sensitivity. Remind me to never drink coffee again….