Would you go to the gym/exercise class if you're ill?

It entirely depends on the culture I live in. In the cultures where I grew up in (Poland and Germany) the rules back then were that you were supposed to rest and cure yourself before going back to school or work. If you had a cold you'd get a week's note from a doctor, so you don't infect others (at least in Germany). I don't know how it is now, but a British friend of mine who lived in Germany was quite full of contempt that Germans don't "power through" with minor illnesses at work and go home with a cold. I learned that "power" through the British spirit, and I felt that it was required from me at work. I have always felt that it was medically unsound until I found out that the medical profession also thinks this way. I had a minor cold just at the start of the pandemic (January till February, so before it officially arrived in the UK) that did not want to go away, and that had as its symptom a runny nose, and eventually a sore throat. As I was working in catering back then, I did not want to go to work, as to not risk customers health, especially that we just started to hear about Covid coming to the UK and especially because my symptoms felt different to a normal cold. My manager told me to get a doctor's note- either saying that I am fit, or unfit for work. I told the doctor about the symptoms, and that I worked with customers directly, and she said that she can give me the morning off, but I should be fine to go in the afternoon! I had to double down on making it clear that it was not safe for customers, and only then did she give me a week off work. I developed a temperature that day as well, so it was really needed that I stay in bed. I could not believe that a doctor would think it is appropriate for an ill person to go spreading their germs when they worked both with food and people. I followed all the pandemic recommendations, but since then I have lost faith in the health culture in the UK. I think some of it is theatre, and people are encouraged to make decisions that will put them and others in danger. And-I don't see a reason to obey some mystical ideal of being careful and not infecting others, when \*clearly\* the culture here does not follow that ideal. So I started to be selfish (within reason). If felt well enough to go the gym and went there I would choose a time which is not busy, and I would stay away from others. I would also wipe everything with disinfectant after myself (as I always do).