Strain, strength, psychosoma, as you mention. Psychosoma can be affected by location, time of day (light out or dark out), the company you are in, legality, or potential work-related ramifications, etc.
I _do not recommend_ this at all, but if you want to have an anxious episode, consuming a 10MG THC edible on an empty stomach, while alone, will likely do it. You may find yourself repeatedly Googling "Am I going to die?!", and then forgetting the answer 10 seconds later, for about 90 minutes.
That said, there have been times where I've enjoyed it. Being in a familiar environment, with people I trust, having eaten food, and maybe a drink or two, tends to nullify the anxiety and allow for a relaxing experience. I find similar benefits from meditation though, so I have little reason to use THC these days.
kinda weird but i find experiencing anxiogenic effects and then calming my mind and letting them go to be an extremely enjoyable experience with mind altering substances. huge part of why i used to abuse diphenhydramine regularly, other than seeing my friends the shadow people!
I can still enjoy a very small dose, preferably in the company of others, like at a party or something.
But I have a really low heart rate. It's around 30 when I wake up in the morning and usually 50-60 during the day. So I guess pretty much everything could raise my heart rate, haha.