I'm sure this one has more to do with my body's ability to process caffeine and isn't only tied to anxiety, but having anxiety certainly doesn't help. Over the past five or so years, I realized my tolerance for caffeine has tanked. I used to be able to drink a medium or large chai tea and feel perfectly normal. Now, I have one cup of green tea and I talk a mile a minute, twitch, and tremble. Coffee has never been in the stars for me, but I love tea! So, I've had to get strategic with how I consume my tea. I will occasionally break down for a chai tea latte (my favorite), but the results are never fun. It usually leads to a racing heartbeat, shaking, headache, nausea, dizziness, and chest tightness. This can go on for hours. Mentally, I tend to get very uneasy and anxious, and the negative physical side effects only make my thoughts race more. I have to be in a good headspace if I'm gonna break down and sip a chai. I can stomach a green tea well enough, but I hate that I can no longer drink it totally symptomless.