You can fast, but if you feel sick stop!Seriously.I learned the hard way.
I started a water fast, got covid, ended fasting 4 days later (I couldn’t eat but still)2 months later, I still have bad post-covid.
Personally any time I feel a bit under the weather after going out I usually will stop fasting and up my intake. I was in the middle of fasting when I fell ill with COVID and definitely think it made my sickness so much worse, I thought I was healthy prior but felt so weak and had an extremely high fever for a very long time, I had never been that sick before and breaking that fast was extremely difficult and honestly just all felt horrible, this was almost a year ago now but still any time I feel under the weather stopping my fasts and getting a test has become my routine.
No, unless I test positive and see how it affects me, I plan to keep going till my goal. I’m not sure about the impacts on immunity and I don’t have anyone leaving the house for school/work so I plan to keep going.