Just to chime in, it's not only people who work in technical fields. I had similar symptoms (chest/back pain, lethargy) from stress from the pandemic + overwork a year ago. And I studied psychology and knew that these things could happen, but when it first happened to me I thought I had heart problems (not likely since no familial history + obvious lifestyle risks). It went away as soon as I quit and went for some therapy, not because I didn't like the job, but there was no way for me to mentally get away from it.